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 CH3COOH has beentitrated with 35.0 mL of 0.100 M NaOH? Write out the balancedchemical equation.
d) *You need to produce a buffer solution thathas a pH of 4.68. You already have solution that contains 15.0 mmolof CH3COOH. How many millimoles of CH3COONa should you add to thissolution?

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4.3 Ratings (787 Votes)

no of moles of CH3COOH molarity volume in L 050035 00175 moles PH PKa logCH3COONaCH3COOH 47 475 logCH3COONaCH3COOH 47475 logCH3COONaCH3COOH logCH3COONaCH3COOH 005 CH3COONaCH3COOH 10005 See Answer

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