Question
Asked Mar 21, 2019

Use the titration curve for the weak acid to calculate the pH of a 0.150 M solution of that weak acid.

Round the pKa to the nearest whole number for the calculation, and enter your answer for the pH to two significant figures.

 

14
12
10
6
4
2
Volume of strong base (mL)
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14 12 10 6 4 2 Volume of strong base (mL)

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Expert Answer

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Step 1

From the given titration curve,

 

pH at equivalence point is ≅ 12

 

pH at half equivalence point is ≅ 8

Step 2

Now, pH = pKa at at half equivalence point = 8.

 

We know,

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Step 3

Assume the weak acid is HA.

 

Dissociation of we...

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