A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa of HCN = 9.20. a) What volume of 0.100 mol L-1 HCl will be required to fully react with the above salt? b) After the reaction in part (a) takes place, will the pH of the solution be acidic, basic or neutral? c) What volume of 0.100 mol L-1 HCl is needed to adjust the pH of the originally provided solution to pH = 9.00? HINT: At pH 9.00, what kind of solution is created if the pKa of HCN is 9.20
A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa of HCN = 9.20. a) What volume of 0.100 mol L-1 HCl will be required to fully react with the above salt? b) After the reaction in part (a) takes place, will the pH of the solution be acidic, basic or neutral? c) What volume of 0.100 mol L-1 HCl is needed to adjust the pH of the originally provided solution to pH = 9.00? HINT: At pH 9.00, what kind of solution is created if the pKa of HCN is 9.20
Chemistry
10th Edition
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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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa of HCN = 9.20.
a) What volume of 0.100 mol L-1 HCl will be required to fully react with the above salt?
b) After the reaction in part (a) takes place, will the pH of the solution be acidic, basic or neutral?
c) What volume of 0.100 mol L-1 HCl is needed to adjust the pH of the originally provided solution to pH = 9.00? HINT: At pH 9.00, what kind of solution is created if the pKa of HCN is 9.20
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