Potassium Hydrogen Answers
What is the formula for potassium hydrogen sulfide?
Q.
Asked by kanu978 - Thu Jun 28 17:12:08 2007 - Chemistry - 4 Answers - Comments
A. KHS
Answered by Uncle Al - Thu Jun 28 17:15:47 2007
Q.
Asked by kanu978 - Thu Jun 28 17:12:08 2007 - Chemistry - 4 Answers - Comments
A. KHS
Answered by Uncle Al - Thu Jun 28 17:15:47 2007
How many grams of potassium hydrogen phthalate would i use to make a 1500mg/L concentration at 500m L of Water?
Q. i have Potassium hydrogen phthalate crystal and i need to make a 1500 mg/L solution at 500m L final amount water.
Asked by - Wed Aug 12 22:47:26 2009 - Chemistry - 2 Answers - Comments
A. The chemical formula for Potassium Hydrogen Phthalate is KHC8H4O4 That is a huge acid as these things go. It's atomic mass is about 204. I'll let you figure out how that comes to be. So you want 1500 mg/L That means you just weigh out 1.500 grams, put it 1/2 liter, shake it around and fill the container up to 1 liter. Since you want 1/2 a liter you would also have to divide the mass in half. The mass is .750 grams. Procedure. === Put 0.75 grams in 250 m L of water. Shake the solution Add enough water to make the solution have a total of 500 m L
Answered by jcherry_99 - Wed Aug 12 23:02:44 2009
Q. i have Potassium hydrogen phthalate crystal and i need to make a 1500 mg/L solution at 500m L final amount water.
Asked by - Wed Aug 12 22:47:26 2009 - Chemistry - 2 Answers - Comments
A. The chemical formula for Potassium Hydrogen Phthalate is KHC8H4O4 That is a huge acid as these things go. It's atomic mass is about 204. I'll let you figure out how that comes to be. So you want 1500 mg/L That means you just weigh out 1.500 grams, put it 1/2 liter, shake it around and fill the container up to 1 liter. Since you want 1/2 a liter you would also have to divide the mass in half. The mass is .750 grams. Procedure. === Put 0.75 grams in 250 m L of water. Shake the solution Add enough water to make the solution have a total of 500 m L
Answered by jcherry_99 - Wed Aug 12 23:02:44 2009
If you had dissolved potassium hydrogen pthalate in 100 m L of water instead of 30-50 m L, would it have had any?
Q. If you had dissolved potassium hydrogen pthalate in 100 m L of water instead of 30-50 m L, would it have had any effect on the amount of base needed? Explain your answer. And second question, what would happen if you forgot to add the phenolpthalein for the acid-base titration? Thanks.
Asked by - Thu Nov 11 22:51:33 2010 - Chemistry - 1 Answers - Comments
A. If you had dissolved potassium hydrogen pthalate in 100 m L of water instead of 30-50 m L, would it have had any effect on the amount of base needed? [This depends entirely on the method, which you haven't appended to your question]. IF you titrate the lot ie 100m L it'll have NO effect, but if you take a 25m L pipette full to titrate in the usual way, it'll be a weaker KHP solution so needs less base to titrate. And second question, what would happen if you forgot to add the phenolpthalein for the acid-base titration? There will be no colour change, and hence no end point.
Answered by - Fri Nov 12 03:46:58 2010
Q. If you had dissolved potassium hydrogen pthalate in 100 m L of water instead of 30-50 m L, would it have had any effect on the amount of base needed? Explain your answer. And second question, what would happen if you forgot to add the phenolpthalein for the acid-base titration? Thanks.
Asked by - Thu Nov 11 22:51:33 2010 - Chemistry - 1 Answers - Comments
A. If you had dissolved potassium hydrogen pthalate in 100 m L of water instead of 30-50 m L, would it have had any effect on the amount of base needed? [This depends entirely on the method, which you haven't appended to your question]. IF you titrate the lot ie 100m L it'll have NO effect, but if you take a 25m L pipette full to titrate in the usual way, it'll be a weaker KHP solution so needs less base to titrate. And second question, what would happen if you forgot to add the phenolpthalein for the acid-base titration? There will be no colour change, and hence no end point.
Answered by - Fri Nov 12 03:46:58 2010
What is the reaction between Na2SO3 and KHP (Potassium Hydrogen Phthalate?
Q.
Asked by potejanee s - Thu Jan 25 02:23:56 2007 - Chemistry - 1 Answers - Comments
A. I would imagine that sulphur dioxide will be evolved, leaving a mixture of sodium and potassium phthalate and water. The reaction would probably need a bit of heat to get it going.
Answered by Gervald F - Thu Jan 25 02:40:22 2007
Q.
Asked by potejanee s - Thu Jan 25 02:23:56 2007 - Chemistry - 1 Answers - Comments
A. I would imagine that sulphur dioxide will be evolved, leaving a mixture of sodium and potassium phthalate and water. The reaction would probably need a bit of heat to get it going.
Answered by Gervald F - Thu Jan 25 02:40:22 2007
Potassium hydrogen phthalate (KHPh, molecular mass = 204.2) is a crystalline acid often used to standardize ba?
Q. Potassium hydrogen phthalate (KHPh, molecular mass = 204.2) is a crystalline acid often used to standardize base solutions. Each molecule of KHP liberates one H^+ ion in aqueous solution. You determine that 15.32g of KHP neutralizes 150.0 m L of barium hydroxide solution. What is the molarity of the barium hydroxide solution?
Asked by GOAT - Tue Oct 6 22:42:42 2009 - Chemistry - 1 Answers - Comments
A. 2 KHP + Ba(OH)2 ratio : 2 : 1 moles KHP = 15.32 / 204.2 =0.0750 moles Ba(OH)2 = 0.0750/2=0.0375 molarity Ba(OH)2 = 0.0375/ 0.150 L=0.250 M
Answered by Dr.A - Wed Oct 7 10:07:05 2009
Q. Potassium hydrogen phthalate (KHPh, molecular mass = 204.2) is a crystalline acid often used to standardize base solutions. Each molecule of KHP liberates one H^+ ion in aqueous solution. You determine that 15.32g of KHP neutralizes 150.0 m L of barium hydroxide solution. What is the molarity of the barium hydroxide solution?
Asked by GOAT - Tue Oct 6 22:42:42 2009 - Chemistry - 1 Answers - Comments
A. 2 KHP + Ba(OH)2 ratio : 2 : 1 moles KHP = 15.32 / 204.2 =0.0750 moles Ba(OH)2 = 0.0750/2=0.0375 molarity Ba(OH)2 = 0.0375/ 0.150 L=0.250 M
Answered by Dr.A - Wed Oct 7 10:07:05 2009
Why is it good to use Potassium Hydrogen Carbonate to treat a bee sting?
Q.
Asked by Curious - Fri Jan 8 10:47:01 2010 - Chemistry - 3 Answers - Comments
Q.
Asked by Curious - Fri Jan 8 10:47:01 2010 - Chemistry - 3 Answers - Comments
What is the molecular formula of a tiltration of potassium permanaganate with hydrogen peroxide?
Q. The redox equation for the reaction of hydrogen peroxide with KMn04 is: 2Mn04 + 6H+ +5H202 => 2Mn 2+ + 8H20 + 502 I need urgent help for the molecular formula of a tiltration of potassium permanaganate with hydrogen peroxide (including states)
Asked by - Sun May 29 03:44:09 2011 - Chemistry - 1 Answers - Comments
A. 2 KMn O4(aq.) + 3 H2O2(aq.) 2 Mn O2(s) + 2 KOH(aq.) + 2 H2O(l) + 3 O2(g)
Answered by Alan F - Sun May 29 05:06:23 2011
Q. The redox equation for the reaction of hydrogen peroxide with KMn04 is: 2Mn04 + 6H+ +5H202 => 2Mn 2+ + 8H20 + 502 I need urgent help for the molecular formula of a tiltration of potassium permanaganate with hydrogen peroxide (including states)
Asked by - Sun May 29 03:44:09 2011 - Chemistry - 1 Answers - Comments
A. 2 KMn O4(aq.) + 3 H2O2(aq.) 2 Mn O2(s) + 2 KOH(aq.) + 2 H2O(l) + 3 O2(g)
Answered by Alan F - Sun May 29 05:06:23 2011
What happens to the hydrogen when potassium bicarbonate is heated?
Q. It looks like the hydrogen atom disappears.
Asked by Clayton S - Sat Jan 5 16:12:32 2008 - Chemistry - 6 Answers - Comments
A. Potassium bicarbonate : KHCO3 This is the equation which shows that when we heat it between 100deg C and 120deg C it will decomposes into K2CO3 (potassium carbonate), H2O (water), and CO2 (carbon dioxide). 2 KHCO3 K2CO3 + CO2 + H2O
Answered by Fafa - Sat Jan 5 16:36:06 2008
Q. It looks like the hydrogen atom disappears.
Asked by Clayton S - Sat Jan 5 16:12:32 2008 - Chemistry - 6 Answers - Comments
A. Potassium bicarbonate : KHCO3 This is the equation which shows that when we heat it between 100deg C and 120deg C it will decomposes into K2CO3 (potassium carbonate), H2O (water), and CO2 (carbon dioxide). 2 KHCO3 K2CO3 + CO2 + H2O
Answered by Fafa - Sat Jan 5 16:36:06 2008
What is the ionic equation for potassium permanganate and hydrogen peroxide?
Q. Could you please include the states?
Asked by Nalex - Tue Apr 13 07:42:25 2010 - Chemistry - 1 Answers - Comments
A. 2 Mn O4- +5 H2O2 + 6H+ = 2 Mn2+ + 5 O2 + 8 H2O
Answered by Dr.A - Tue Apr 13 09:07:40 2010
Q. Could you please include the states?
Asked by Nalex - Tue Apr 13 07:42:25 2010 - Chemistry - 1 Answers - Comments
A. 2 Mn O4- +5 H2O2 + 6H+ = 2 Mn2+ + 5 O2 + 8 H2O
Answered by Dr.A - Tue Apr 13 09:07:40 2010
Potassium ions are attracted to the negative electrode, why is hydrogen gas formed but not potassium?
Q. Potassium ions are attracted to the negative electrode, why is hydrogen gas formed but not potassium ?
Asked by - Wed Feb 16 08:45:37 2011 - Chemistry - 1 Answers - Comments
Q. Potassium ions are attracted to the negative electrode, why is hydrogen gas formed but not potassium ?
Asked by - Wed Feb 16 08:45:37 2011 - Chemistry - 1 Answers - Comments
A student titrated a potassium hydrogen phthalate sample having a mass of 1.36 grams with 19.75 milliliters of?
Q. A student titrated a potassium hydrogen phthalate sample having a mass of 1.36 grams with 19.75 milliliters of Na OH. Find the molarity of the base. THanks! thanks. very helpful.
Asked by - Thu Nov 11 20:11:56 2010 - Chemistry - 1 Answers - Comments
A. use molar mass , to find moles: 1.36 grams @ 204.23 g/mol KHP = 0.006659 moles of KHP by the equation: 1 KHP & 1 Na OH --> 1 H2O & 1 Na KP 0.006659 moles of KHP reacts with an equal number of moles of Na OH = 0.006659 moles of Na OH find the molarity of that 19.75 ml sample (0.006659 moles of Na OH) / (0.01975 Litres) = 0.3372 Molar Na OH because the "1.36 grams" only has 3 sig figs showing kyou are likely expectd to round your answer off to 0.337 Mola Na OH
Answered by Steve O - Thu Nov 11 20:39:16 2010
Q. A student titrated a potassium hydrogen phthalate sample having a mass of 1.36 grams with 19.75 milliliters of Na OH. Find the molarity of the base. THanks! thanks. very helpful.
Asked by - Thu Nov 11 20:11:56 2010 - Chemistry - 1 Answers - Comments
A. use molar mass , to find moles: 1.36 grams @ 204.23 g/mol KHP = 0.006659 moles of KHP by the equation: 1 KHP & 1 Na OH --> 1 H2O & 1 Na KP 0.006659 moles of KHP reacts with an equal number of moles of Na OH = 0.006659 moles of Na OH find the molarity of that 19.75 ml sample (0.006659 moles of Na OH) / (0.01975 Litres) = 0.3372 Molar Na OH because the "1.36 grams" only has 3 sig figs showing kyou are likely expectd to round your answer off to 0.337 Mola Na OH
Answered by Steve O - Thu Nov 11 20:39:16 2010
a student titrates an unknown amount of potassium hydrogen phthlate?
Q. a student titrates an unknown amount of potassium hydrogen phthlate with 20.46 m L of .1 M solution of sodium hyfroxide. Khp has oine acidic hydrogen. What mass of KHp was titrated by the sodium hydroxide solution? please help i have no idea how to do this and i have a final tommorow
Asked by Alyssa - Thu Jun 24 19:53:34 2010 - Chemistry - 1 Answers - Comments
A. moles Na OH = 0.02046 L x 0.1 M = 0.002046 the ratio between Na OH and KHP is 1 : 1 moles KHP = 0.002046 mass KHP = 0.002046 mol x 204.2212 g/mol=0.4178 g
Answered by Dr.A - Fri Jun 25 06:31:55 2010
Q. a student titrates an unknown amount of potassium hydrogen phthlate with 20.46 m L of .1 M solution of sodium hyfroxide. Khp has oine acidic hydrogen. What mass of KHp was titrated by the sodium hydroxide solution? please help i have no idea how to do this and i have a final tommorow
Asked by Alyssa - Thu Jun 24 19:53:34 2010 - Chemistry - 1 Answers - Comments
A. moles Na OH = 0.02046 L x 0.1 M = 0.002046 the ratio between Na OH and KHP is 1 : 1 moles KHP = 0.002046 mass KHP = 0.002046 mol x 204.2212 g/mol=0.4178 g
Answered by Dr.A - Fri Jun 25 06:31:55 2010
How many moles of Na OH will react with 1 mole of potassium hydrogen phthalate?
Q. I don't know why but our lab is always ahead of our lecture so i don't know how to answer this prelab question can someone help me pleas Also I don't know what the phthalate is.
Asked by - Mon Oct 31 16:11:02 2011 - Chemistry - 1 Answers - Comments
A. Potassium Hydrogen Phthalate is a mono-functional organic acid, meaning that it has 1 ionizable Hydrogen. 1 mole of KHP will react with 1 mole of Na OH. Phthalate indicates a compound that is derived from Phthalic Acid, also known as Benzene-1,2-dioic Acid, which has a formula of C8H6O4. To make Potassium Hydrogen Phthalate, one of the two acid functional groups is neutralized with KOH, thereby forming a mono-Potassium salt of the di-acid.
Answered by Sensei - Mon Oct 31 16:22:27 2011
Q. I don't know why but our lab is always ahead of our lecture so i don't know how to answer this prelab question can someone help me pleas Also I don't know what the phthalate is.
Asked by - Mon Oct 31 16:11:02 2011 - Chemistry - 1 Answers - Comments
A. Potassium Hydrogen Phthalate is a mono-functional organic acid, meaning that it has 1 ionizable Hydrogen. 1 mole of KHP will react with 1 mole of Na OH. Phthalate indicates a compound that is derived from Phthalic Acid, also known as Benzene-1,2-dioic Acid, which has a formula of C8H6O4. To make Potassium Hydrogen Phthalate, one of the two acid functional groups is neutralized with KOH, thereby forming a mono-Potassium salt of the di-acid.
Answered by Sensei - Mon Oct 31 16:22:27 2011
What would you multiply "moles of potassium hydrogen sulfate" by to convert to the units "moles of water" ?
Q. KHSO4 (aq) + KOH (aq) K2SO4 (aq) + H2O (l)
Asked by marvlus_1 - Wed Oct 15 22:57:01 2008 - Chemistry - 1 Answers - Comments
A. The ratio of the molecules is one to one. So you multiply by one.
Answered by Ezra - Wed Oct 15 23:07:33 2008
Q. KHSO4 (aq) + KOH (aq) K2SO4 (aq) + H2O (l)
Asked by marvlus_1 - Wed Oct 15 22:57:01 2008 - Chemistry - 1 Answers - Comments
A. The ratio of the molecules is one to one. So you multiply by one.
Answered by Ezra - Wed Oct 15 23:07:33 2008
What is the molecular formula of Potassium Hydrogen Phthalate?
Q. What is the molecular Mass?!?!
Asked by >>G<< - Wed Oct 1 14:27:07 2008 - Chemistry - 1 Answers - Comments
A. KHC8H4O4
Answered by Gamaliel D - Wed Oct 1 14:33:19 2008
Q. What is the molecular Mass?!?!
Asked by >>G<< - Wed Oct 1 14:27:07 2008 - Chemistry - 1 Answers - Comments
A. KHC8H4O4
Answered by Gamaliel D - Wed Oct 1 14:33:19 2008
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
Q. How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated? 2KHCO3(s) K2CO3(s) + CO2(g) + H2O(l)
Asked by Cortinia - Sat Oct 22 23:02:34 2011 - Chemistry - 2 Answers - Comments
A. Simple stoichiometry. First find the moles of KHCO3 present. 400g KHCO3 * ( 1 mole KHCO3 / 100.12g KHCO3) = 3.995 moles Second, multiply by mole ratio The mole ratio of KHCO3 to K2CO3 is 2 to 1 3.995 moles KHCO3 * ( 1 mole K2CO3 / 2 moles KHCO3) = 1.997 moles K2CO3
Answered by - Sat Oct 22 23:07:17 2011
Q. How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated? 2KHCO3(s) K2CO3(s) + CO2(g) + H2O(l)
Asked by Cortinia - Sat Oct 22 23:02:34 2011 - Chemistry - 2 Answers - Comments
A. Simple stoichiometry. First find the moles of KHCO3 present. 400g KHCO3 * ( 1 mole KHCO3 / 100.12g KHCO3) = 3.995 moles Second, multiply by mole ratio The mole ratio of KHCO3 to K2CO3 is 2 to 1 3.995 moles KHCO3 * ( 1 mole K2CO3 / 2 moles KHCO3) = 1.997 moles K2CO3
Answered by - Sat Oct 22 23:07:17 2011
If a 0.919 g sample of potassium hydrogen phthalate is dissolved in water and titrated to the equivalence poin?
Q. Potassium hydrogen phthalate, KHC8H4O4, is used to standardize solutions of bases. The acidic anion reacts with strong bases (such as Na OH or KOH) according to the following net ionic equation. HC8H4O4-(aq) + OH -(aq) C8H4O42-(aq) + H2O(l)
Asked by - Sun Oct 16 23:29:22 2011 - Chemistry - 1 Answers - Comments
A. % @v
Answered by - Thu Oct 20 20:29:33 2011
Q. Potassium hydrogen phthalate, KHC8H4O4, is used to standardize solutions of bases. The acidic anion reacts with strong bases (such as Na OH or KOH) according to the following net ionic equation. HC8H4O4-(aq) + OH -(aq) C8H4O42-(aq) + H2O(l)
Asked by - Sun Oct 16 23:29:22 2011 - Chemistry - 1 Answers - Comments
A. % @v
Answered by - Thu Oct 20 20:29:33 2011
How many moles of Na OH will react with 1 mole of potassium hydrogen phthalate?
Q. I don't know why but our lab is always ahead of our lecture so i don't know how to answer this prelab question can someone help me pleas Also I don't know what the phthalate is.
Asked by - Mon Oct 31 15:54:42 2011 - Chemistry - 1 Answers - Comments
A. one moles of Na OH will react with 1 mole of potassium hydrogen phthalate. KHP is a primary standard for determining the normality of Na OH solutions.
Answered by plays_poorly... - Mon Oct 31 16:36:35 2011
Q. I don't know why but our lab is always ahead of our lecture so i don't know how to answer this prelab question can someone help me pleas Also I don't know what the phthalate is.
Asked by - Mon Oct 31 15:54:42 2011 - Chemistry - 1 Answers - Comments
A. one moles of Na OH will react with 1 mole of potassium hydrogen phthalate. KHP is a primary standard for determining the normality of Na OH solutions.
Answered by plays_poorly... - Mon Oct 31 16:36:35 2011
What is the structure of Potassium Hydrogen Phthalate?
Q. i need to find out the shortened structure of Potassium Hydrogen Phthlate (KHP), i know that molecular structure is HC8H4O4K but it's next to impossible to find the simplier (eg KH[COOH]2???) structure on the internet.
Asked by April - Sun Mar 22 17:00:34 2009 - Chemistry - 1 Answers - Comments
A. Can't draw out here but look at the link for structure.
Answered by Mike A - Mon Mar 23 07:50:25 2009
Q. i need to find out the shortened structure of Potassium Hydrogen Phthlate (KHP), i know that molecular structure is HC8H4O4K but it's next to impossible to find the simplier (eg KH[COOH]2???) structure on the internet.
Asked by April - Sun Mar 22 17:00:34 2009 - Chemistry - 1 Answers - Comments
A. Can't draw out here but look at the link for structure.
Answered by Mike A - Mon Mar 23 07:50:25 2009
Sodium hydroxide solution is usually standardized by titrating a pure sample of potassium hydrogen phthalate..?
Q. Sodium hydroxide solution is usually standardized by titrating a pure sample of potassium hydrogen phthalate (KHP), an acid with one acidic hydrogen and a molar mass of 204.22 g. It takes 30.27 m L of a sodium hydroxide solution to titrate a 0.1333 g sample of KHP. What is the molarity of the sodium hydroxide?
Asked by mushroomhead1391@sbcglobal.net - Mon Nov 16 02:20:06 2009 - Chemistry - 1 Answers - Comments
A. moles KHP = 0.1333 g / 204.22 g/mol=0.0006527 = moles Na OH M = 0.0006527 mol / 0.03027 L=0.02156
Answered by Dr.A - Mon Nov 16 02:34:46 2009
Q. Sodium hydroxide solution is usually standardized by titrating a pure sample of potassium hydrogen phthalate (KHP), an acid with one acidic hydrogen and a molar mass of 204.22 g. It takes 30.27 m L of a sodium hydroxide solution to titrate a 0.1333 g sample of KHP. What is the molarity of the sodium hydroxide?
Asked by mushroomhead1391@sbcglobal.net - Mon Nov 16 02:20:06 2009 - Chemistry - 1 Answers - Comments
A. moles KHP = 0.1333 g / 204.22 g/mol=0.0006527 = moles Na OH M = 0.0006527 mol / 0.03027 L=0.02156
Answered by Dr.A - Mon Nov 16 02:34:46 2009
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