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Answer the following questions: 1) What is the pH of a buffer solution that is 0.34 M hydrofluoric acid (HF) and 0.75 M sodium fluoride (NaF)? The K, for hydrofluoric acid is 7.2 x 10* A) 4.38 B) 3.48 C) 8.43 D) 3.14 determine activity coefficient of Al³ at

Answer the following questions: 1) What is the pH of a buffer solution that is 0.34 M hydrofluoric acid (HF) and 0.75 M sodium fluoride (NaF)? The K, for hydrofluoric acid is 7.2 x 10* A) 4.38 B) 3.48 C) 8.43 D) 3.14 determine activity coefficient of Al³ at

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Answer the following questions: 1) What is the pH of a buffer solution that is 0.34 M hydrofluoric acid (HF) and 0.75 M sodium fluoride (NaF)? The K, for hydrofluoric acid is 7.2 x 10* A) 4.38 B) 3.48 C) 8.43 D) 3.14 2) Use Debye-Huckel equation to determine activity coefficient of Al" at p=0.08, ionic size = 0.9 nm A) 0.08 B) 1.97 C) 0.197 D) 0.971 3) What is the lonic strength of a solution that is 0.05M in KNO3 and 0.1 M in Na₂SO, ? A) 0.50 B) 0.05 C) 0.67 D) 0.35 4) What is the molarity of CO₂ ions in aqueous solution that contain 40 ppm of Al₂(CO3)3? (M.Wt. 86.99 g/mol) A) 0.0014 M B) 1.400 M C) 4.100 M D) 0.235 M 5) Calculate the pH of a solution made by mixing 500 ml of 0.500 M HCOONa with 1.5L of 0.08 M HCOOH solutions. (K, of HCOOH = 1.77 x 10)
Transcribed Image Text:Answer the following questions: 1) What is the pH of a buffer solution that is 0.34 M hydrofluoric acid (HF) and 0.75 M sodium fluoride (NaF)? The K, for hydrofluoric acid is 7.2 x 10* A) 4.38 B) 3.48 C) 8.43 D) 3.14 2) Use Debye-Huckel equation to determine activity coefficient of Al" at p=0.08, ionic size = 0.9 nm A) 0.08 B) 1.97 C) 0.197 D) 0.971 3) What is the lonic strength of a solution that is 0.05M in KNO3 and 0.1 M in Na₂SO, ? A) 0.50 B) 0.05 C) 0.67 D) 0.35 4) What is the molarity of CO₂ ions in aqueous solution that contain 40 ppm of Al₂(CO3)3? (M.Wt. 86.99 g/mol) A) 0.0014 M B) 1.400 M C) 4.100 M D) 0.235 M 5) Calculate the pH of a solution made by mixing 500 ml of 0.500 M HCOONa with 1.5L of 0.08 M HCOOH solutions. (K, of HCOOH = 1.77 x 10)
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