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Question 5 A. How many mL of 0.1 M CH3COONa must you add to 35.0 mL...

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Chemistry

Question 5

A. How many mL of 0.1 M CH3COONa must you add to 35.0 mL of 0.50M CH3COOH to make a buffer of pH 4.7? [pKa of H3COONa is 4.75]

B. Use the Henderson-Hasselbalch equation to calculate how manymL of 0.1 M HCl must you add to 100 mL of 0.10 M Tris base to makea buffer of pH 8.8? [pka of Tris Base is 8.08]

C. What is the pH when 25.0 mL of 0.200 M of H3COONa has beentitrated with 35.0 mL of 0.100 M NaOH? Write out the balancedchemical equation.

D. You need to produce a buffer solution that has a pH of 4.68.You already have solution that contains 15.0 mmol of H3COONa. Howmany millimoles of H3COONa should you add to this solution?

Answer & Explanation Solved by verified expert
4.5 Ratings (612 Votes)
A no of moles of CH3COOH molarity volume in L 050035 00175 PH Pka logCH3COONaCH3COOH 47 475 logCH3COONaCH3COOH logCH3COONaCH3COOH 47475 logCH3COONaCH3COOH 005 CH3COONaCH3COOH 10005 CH3COONaCH3COOH    See Answer
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