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pH of acetic acid solutions. Remember, acetic acid is a weak acid, with a Ka =...

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Chemistry

pH of acetic acid solutions. Remember, aceticacid is a weak acid, with a Ka = 1.8 x 10−5.

Obtain 10.0 mL of 0.10 M acetic acid and place in a clean dry50.0 mL beaker. Predict the value of the pH. Measure the pH withthe pH meter. Record the value.

Take 1.00 mL of the 0.10 M CH3COOH(aq) in the previous step, andput it in another clean beaker. Add 9.00 mL of deionized water andstir. What is the new concentration of CH3COOH(aq)? Predict the pH.Measure the pH. Record the value.

Add 90.0 mL of deionized water to the diluted CH3COOH(aq) instep 2. What is the new concentration of CH3COOH(aq)? Predict thepH. Measure the pH. Record the value.

Answer & Explanation Solved by verified expert
3.6 Ratings (430 Votes)
acetic acid dissociates asCH3COOH H2O CH3COO H3OKa CH3COOH3O CH3COOHbutCH3COO H3O xKa xx CH3COOHSubstitute the value in equation18105 x2 010x2 18105 010 18106x 134 103Concentration of H3O 134 103MpH logHpH log 134 103pH 287The pH of 010M acetic acid is    See Answer
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