Look up the structures and molar masses of KHP, maleic and phosphoric acid. How many protons...
- Look up the structures and molar masses of KHP, maleic and phosphoric acid. How many protons can be removed from each of these acids by reaction with NaOH?
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Look up the structures and molar masses of KHP, maleic and
phosphoric acid. How many protons...
Look up the structure of maleic acid. Draw the its three different Lewis structures (H2A, HA–,...
Look up the structure of maleic acid. Draw the its three different Lewis structures (H2A, HA–, A2–).Which functional group is responsible for maleic acid’s acidity?
Potassium acid phthalate, KHC8H4O4, or KHP, is used in many laboratories, including general chemistry laboratories, to...
Potassium acid phthalate, KHC8H4O4, or KHP, is used in many laboratories, including general chemistry laboratories, to standardize solutions of base. KHP is one of only a few stable solid acids that can be dried by warming and weighed in air. A 0.3701 g sample of KHC8H4O4 reacts with 33.97 mL of a NaOH solution in a titration. What is the molar concentration of the NaOH? KHC8H4O4(aq) + NaOH(aq) → KNaC8H4O4(aq) + H2O(l)
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of...
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of the following dicarboxylic acids. These books can be found in the college library or the chemistry lab. Note, dicarboxylic acids usually have several names; do not let this confuse you. For instance succinic acid can also be called amber acid, asuccin, butanedioic acid, 1,2- ethanedicarboxylic acid, ethylenesuccinic acid, wormwood, or wormwood acid, Hint you will need this information for your report. So, be sure...
The titration of Maleic Acid HOOC COOH CC Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titrat...
The
titration of Maleic Acid
HOOC COOH CC Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titration of 250 mL of 100 mM maleic acid using 1 M NaOH. a) How many titratable protons are present in this acid? [1 marks]. b) Indicate on the curve with a "O" the end point titrations of each titratable group. [1 mark] c) Indicate on the titration curve with a clear "X" each pKa value associated...
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of the following dicarboxylic aci...
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of the following dicarboxylic acids. These books can be found in the college library or the chemistry lab. Note, dicarboxylic acids usually have several names; do not let this confuse you. For instance succinic acid can also be called amber acid, asuccin, butanedioic acid, 1,2- ethanedicarboxylic acid, ethylenesuccinic acid, wormwood, or wormwood acid, Hint you will need this information for your report. So, be sure...
HOOC COOH Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titration of 250 mL of 100 mM maleic ac...
HOOC COOH Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titration of 250 mL of 100 mM maleic acid using 1 M NaOH. a) How many titratable protons are present in this acid? [1 marks). b) Indicate on the curve with a "O"the end point titrations of each titratable group. [1 mark) c) Indicate on the titration curve with a clear "X" each pKa value associated with these titratable protons and estimate to...
I'm having trouble with these questions from the lab: polyprotic acids: titration of phosphoric acid and...
I'm having trouble with these questions from the lab: polyprotic acids: titration of phosphoric acid and determination of the molar concentration of phosphoric acid in cola. 3.A student titrated 25.00 mL of cola and it required 18.27 mL of 0.0100 M NaOH to reach the 1st equivalence point. Calculate the molar concentration of phosphoric acid in this brand of cola. 4. If the density of the "Cola" drink is 1.00 g/mL. What is the mass percent of phosphoric acid in...
Question 1 (2 points) How many moles of KHP are contained in a sample of 4.656...
Question 1 (2 points) How many moles of KHP are contained in a sample of 4.656 g KHP (Molar Mass = 204.22 g/mol)? 0.0228 moles KHP 0.0656 moles KHP 4656 moles KHP 0.0114 moles HD Question 2 (2 points) If the reaction between KHP and NaOH is: C8H.KOH + NaOH - H2O + CHAKO Na (KHP) How many moles of NaOH are needed to react with 4.656 g of KHP?! 0.0656 moles NaOH 0.0228 moles NaOH 0.0114 moles NaOH 4.656...
2. a. Both concentrated sulfuric acid and concentrated phosphoric acid are known to catalyze the conversion...
2. a. Both concentrated sulfuric acid and concentrated phosphoric acid are known to catalyze the conversion of cyclohexanol to cyclohexene via dehydration reaction. Concentrated hydrochloric acid, however, is not a viable option. Provide two reasons on what make sulfuric acid and phosphoric acid advantageous over hydrochloric acid. Look up additional information on these acids if needed. b. In preparation of the bromohydrin (trans-2-bromo-1-methylcyclohexanol) with bromine, side products dibromides shown below are often observed. This side reaction can be essentially avoided...
4. Vinegar is a solution of acetic acid. Acetic acid has a 1:1 ratio when reacted...
4. Vinegar is a solution of acetic acid. Acetic acid has a 1:1 ratio when reacted with NaOH. a. Suppose that the molarity of acetic acid in vinegar is 0.5 M, how many grams of acetic acid are present in the 5 ml of vinegar solution used in the titration? (molar mass of acetic acid = 60 g/mol). b. If vinegar has a density of 1.01 g/mol. Calculate the % of acetic acid in vinegar by mass. 5. 50 ml...
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of the following dicarboxylic acids. These books can be found in the college library or the chemistry lab. Note, dicarboxylic acids usually have several names; do not let this confuse you. For instance succinic acid can also be called amber acid, asuccin, butanedioic acid, 1,2- ethanedicarboxylic acid, ethylenesuccinic acid, wormwood, or wormwood acid, Hint you will need this information for your report. So, be sure...
The
titration of Maleic Acid
HOOC COOH CC Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titration of 250 mL of 100 mM maleic acid using 1 M NaOH. a) How many titratable protons are present in this acid? [1 marks]. b) Indicate on the curve with a "O" the end point titrations of each titratable group. [1 mark] c) Indicate on the titration curve with a clear "X" each pKa value associated...
2. Use the CRC Handbook or Merck Index to determine the formulas and molar masses of the following dicarboxylic acids. These books can be found in the college library or the chemistry lab. Note, dicarboxylic acids usually have several names; do not let this confuse you. For instance succinic acid can also be called amber acid, asuccin, butanedioic acid, 1,2- ethanedicarboxylic acid, ethylenesuccinic acid, wormwood, or wormwood acid, Hint you will need this information for your report. So, be sure...
HOOC COOH Maleic Acid Hd 20 40 60 Volume of NaOH (mL) The curve above shows the titration of 250 mL of 100 mM maleic acid using 1 M NaOH. a) How many titratable protons are present in this acid? [1 marks). b) Indicate on the curve with a "O"the end point titrations of each titratable group. [1 mark) c) Indicate on the titration curve with a clear "X" each pKa value associated with these titratable protons and estimate to...
Question 1 (2 points) How many moles of KHP are contained in a sample of 4.656 g KHP (Molar Mass = 204.22 g/mol)? 0.0228 moles KHP 0.0656 moles KHP 4656 moles KHP 0.0114 moles HD Question 2 (2 points) If the reaction between KHP and NaOH is: C8H.KOH + NaOH - H2O + CHAKO Na (KHP) How many moles of NaOH are needed to react with 4.656 g of KHP?! 0.0656 moles NaOH 0.0228 moles NaOH 0.0114 moles NaOH 4.656...
2. a. Both concentrated sulfuric acid and concentrated phosphoric acid are known to catalyze the conversion of cyclohexanol to cyclohexene via dehydration reaction. Concentrated hydrochloric acid, however, is not a viable option. Provide two reasons on what make sulfuric acid and phosphoric acid advantageous over hydrochloric acid. Look up additional information on these acids if needed. b. In preparation of the bromohydrin (trans-2-bromo-1-methylcyclohexanol) with bromine, side products dibromides shown below are often observed. This side reaction can be essentially avoided...
4. Vinegar is a solution of acetic acid. Acetic acid has a 1:1 ratio when reacted with NaOH. a. Suppose that the molarity of acetic acid in vinegar is 0.5 M, how many grams of acetic acid are present in the 5 ml of vinegar solution used in the titration? (molar mass of acetic acid = 60 g/mol). b. If vinegar has a density of 1.01 g/mol. Calculate the % of acetic acid in vinegar by mass. 5. 50 ml...
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