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Sodium hydroxide reacts with a monoprotic weak acid HA according to the following balanced chemical reaction: NaOH(aq) + HA(aq) NaA(aq) + H2O(1) A,H = ? 77 mL of 1.00 mol/L NAOH and 77 mL of 1.00 mol/L HA are added to an insulated-cup calorimeter, and the mixture was allowed to reach thermal equilibrium. Using the following data collected and assumptions made, determine A,H. • The initial temperatures of both solutions were 25.12°C The final temperature of the mixture was 31.34°C • Assume that the density and specific heat of the mixture is the same as that of water (0.9970 g/mL, 4.184 J g • Assume that no heat is lost to the surroundings. • Give your answer in units of kJ/mol. -1 °c-1)

Sodium hydroxide reacts with a monoprotic weak acid HA according to the following balanced chemical reaction: NaOH(aq) + HA(aq) NaA(aq) + H2O(1) A,H = ? 77 mL of 1.00 mol/L NAOH and 77 mL of 1.00 mol/L HA are added to an insulated-cup calorimeter, and the mixture was allowed to reach thermal equilibrium. Using the following data collected and assumptions made, determine A,H. • The initial temperatures of both solutions were 25.12°C The final temperature of the mixture was 31.34°C • Assume that the density and specific heat of the mixture is the same as that of water (0.9970 g/mL, 4.184 J g • Assume that no heat is lost to the surroundings. • Give your answer in units of kJ/mol. -1 °c-1)

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
Problem 71AP
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Sodium hydroxide reacts with a monoprotic weak acid HA according to the following balanced chemical reaction: NAOH(aq) + HA(aq) → NaA(aq) + H,O() A.HP = ? 77 mL of 1.00 mol/L NAOH and 77 mL of 1.00 mol/L HA are added to an insulated-cup calorimeter, and the mixture was allowed to reach thermal equilibrium. Using the following data collected and assumptions made, determine A,H. •The initial temperatures of both solutions were 25.12°C • The final temperature of the mixture was 31.34°C •Assume that the density and specific heat of the mixture is the same as that of water (0.9970 g/mL, 4.184 J g"- °c¯!) • Assume that no heat is lost to the surroundings. • Give your answer in units of kJ/mol.
Transcribed Image Text:Sodium hydroxide reacts with a monoprotic weak acid HA according to the following balanced chemical reaction: NAOH(aq) + HA(aq) → NaA(aq) + H,O() A.HP = ? 77 mL of 1.00 mol/L NAOH and 77 mL of 1.00 mol/L HA are added to an insulated-cup calorimeter, and the mixture was allowed to reach thermal equilibrium. Using the following data collected and assumptions made, determine A,H. •The initial temperatures of both solutions were 25.12°C • The final temperature of the mixture was 31.34°C •Assume that the density and specific heat of the mixture is the same as that of water (0.9970 g/mL, 4.184 J g"- °c¯!) • Assume that no heat is lost to the surroundings. • Give your answer in units of kJ/mol.
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