Calculate the pH when 1.199 g of HCOONA (FW - 68.01 g/mol) is added to 40.4 ml of 0.500 M formic acid, HCOOH (FW - 46.03 g/mol). Ignore any changes in volume. The Ka value for HCOOH is 1.8 x 10-4. Enter your answer in decimal format with two decimal places (value + 0.05).

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section: Chapter Questions
Problem 116QRT
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QUESTION 9
Calculate the pH when 1.199 g of HCOONA (FW 68.01 g/mol) is added to 40.4 mL of 0.500 M formic acid, HCOH (FW = 46.03 g/mol). Ignore any changes in volume. The K, value for HCOOH is 1.8 x 10 4.
Enter your answer in decimal format with two decimal places (value ± 0.05).
Transcribed Image Text:QUESTION 9 Calculate the pH when 1.199 g of HCOONA (FW 68.01 g/mol) is added to 40.4 mL of 0.500 M formic acid, HCOH (FW = 46.03 g/mol). Ignore any changes in volume. The K, value for HCOOH is 1.8 x 10 4. Enter your answer in decimal format with two decimal places (value ± 0.05).
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