A 1.00 L volume of solution contains 0.250 M HC2H3O2 and 0.240 M NaC2H3O2 at pH 4.72. To the solution is added 0.0180 moles of NaOH, with no change in volume. What is the new pH to 2 decimal places? HC2H3O2 has Ka = 1.8 x 10-5
A 1.00 L volume of solution contains 0.250 M HC2H3O2 and 0.240 M NaC2H3O2 at pH 4.72. To the solution is added 0.0180 moles of NaOH, with no change in volume. What is the new pH to 2 decimal places? HC2H3O2 has Ka = 1.8 x 10-5
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A 1.00 L volume of solution contains 0.250 M HC2H3O2 and 0.240 M NaC2H3O2 at pH 4.72. To the solution is added 0.0180 moles of NaOH, with no change in volume. What is the new pH to 2 decimal places? HC2H3O2 has Ka = 1.8 x 10-5
Expert Solution
Step 1
Since NaOH(aq) is a monoacidic strong base, it reacts with the acidic part, HC2H3O2(aq) of the buffer.
Balanced equation:
NaOH(aq) + HC2H3O2(aq) ----> NaC2H3O2(aq) + H2O(l)
Mole ratio = 1/1
Moles of NaOH added = 0.0180 mol
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