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The Ka of benzoic acid is 6.5 x 10 ^(-5) a) Calculate the pH of a...

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Chemistry

The Ka of benzoic acid is 6.5 x 10 ^(-5)

a) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffersolution after the addition of 20.00 mL of a 0.1M NaOH

b) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffersolution after the addition of 50.00 mL of a 0.1M NaOH

REDOX TITRATION

2) Express the reactions for potassium permanganate titrationwith sodium oxalate: Hint: include the 2 half-reactions.

3) What is the percent oxalate in a 1.723 g sample if 31.10 mLof 0.019M permanganate solution is required fortitration?  

Answer & Explanation Solved by verified expert
3.9 Ratings (511 Votes)
moles of benzoic acid in 40ml of 01M 014010000004 moles of NaOH in 20ml of 01M NaOH 01201000 0002 the reaction between benzoic acid and sodium hydroxide is C6H5COOHNaOH C6H5COONaH2O According to the reaction 1 moles of benzoic acid and 1mol of sodium    See Answer
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