Assume 0.25 g of a monoprotic acid was titrated with 10.25 mL of magnesium hydroxide base with a concentration of 0.140 M. Calculate the molecular weight of the unknown acid.
Assume 0.25 g of a monoprotic acid was titrated with 10.25 mL of magnesium hydroxide base...
a) A 25.00-mL sample of monoprotic acid was titrated with 0.0800 M potassium hydroxide solution. The equivalence point was reached after 18.75 mL of base was added. Calculate the concentration of the acid. b) A 15.00-mL sample of 0.120 M nitric acid was titrated with 0.0800 M potassium hydroxide. Calculate the pH of the sample when 10.00 mL of the base has been added.
A sample of 0.2140 g of an unknown monoprotic acid was dissolved in 25.0 mL of water and titrated with 0.0950 M NaOH. The titration required 30.0 mL of base to reach the equivalence point, at which point the pH was 8.68. a) What is the molecular weight of the acid? b) What is the pKa of the acid?
A 0.4352-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized potassium hydroxide. The equivalence point in the titration is reached after the addition of 31.14 mL of 0.1833 M potassium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid. _____ g/mol
A 0.843 gram sample of an unknown monoprotic acid is dissolved in 40.0 mL of water and titrated with a a 0.496 M aqueous potassium hydroxidesolution. It is observed that after 5.16 milliliters of potassium hydroxide have been added, the pH is 9.092 and that an additional 9.84 mL of the potassium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? _______g/mol (2) What is the value of Ka for the...
A 0.898 grain sample of an unknown monoprotic acid is dissolved in 50.0 mL of water and titrated with a 0.372 M aqueous sodium hydroxide solution. It is observed that after 15.0 milliliters of sodium hydroxide have been added, the pH is 5.053 and that an additional 6.90 mL of the sodium hydroxide solution is required to reach the equivalence point. What is the molecular weight of the acid? g/mol What is the value of K_a for the acid?
A 1.53 gram sample of an unknown monoprotic acid is dissolved in 25.0 mL of water and titrated with a a 0.234 M aqueous barium hydroxide solution. It is observed that after 16.3 milliliters of barium hydroxide have been added, the pH is 4.924 and that an additional 10.0 mL of the barium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? g/mol (2) What is the value of Ka for the...
A 1.20 gram sample of an unknown monoprotic acid is dissolved in 25.0 mL of water and titrated with a a 0.485 M aqucous potassium hydroxide solution. It is observed that after 7.33 milliliters of potassium hydroxide have been added, the pH is 4.515 and that an additional 13.3 mL of the potassium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? (2) What is the value of K, for the...
A 1.48 gram sample of an unknown monoprotic acid is dissolved in 30.0 mL of water and titrated with a a 0.291 M aqueous barium hydroxide solution. It is observed that after 7.15 milliliters of barium hydroxide have been added, the pH is 9.104 and that an additional 13.2 mL of the barium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? g/mol 2) What is the value of K_a for...
A 0.660 gram sample of an unknown monoprotic acid is dissolved in 30.0 mL of water and titrated with a a 0.370 M aqueous potassium hydroxide solution. It is observed that after 10.1 milliliters of potassium hydroxide have been added, the pH is 7.732 and that an additional 5.10 mL of the potassium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? _______ g/mol (2) What is the value of Ka...
A 1.75 gram sample of an unknown monoprotic acid is dissolved in 40.0 mL of water and titrated with a a 0.477 M aqueous barium hydroxide solution. It is observed that after 9.85 milliliters of barium hydroxide have been added, the pH is 3.603 and that an additional 5.05 mL of the barium hydroxide solution is required to reach the equivalence point. (1) What is the molecular weight of the acid? g/mol (2) What is the value of Ka for...