Problem: Paracresol (C7H8OH) has a Ka = 5.5 x 10-11. If 100.0 mL of a 0.5000 M aqueous paracresol solution is mixed with 100.0 mL of 0.5000 M aqueous sodium hydroxide, the resulting solution will have a pH.a. = 7b. < 7c. > 7d. 0

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FREE Expert Solution

We are being asked to calculate the pH of 100.0 mL of a 0.5000 M aqueous paracresol solution mixed with 100.0 mL of 0.5000 M aqueous sodium hydroxide.


We will calculate the pH of the solution at the equivalence point using the following steps:

Step 1. Write the chemical equation for the reaction between C7H8OH and NaOH.
Step 2. Calculate the initial amounts of C7H8OH and NaOH in moles before the reaction happens.
Step 3. Construct an ICF Chart.
Step 4. Calculate the new concentration of the species left in the solution.
Step 5. Calculate pH.


Step 1. Write the chemical equation for the reaction between HF and NaOH.

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Problem Details

Paracresol (C7H8OH) has a Ka = 5.5 x 10-11. If 100.0 mL of a 0.5000 M aqueous paracresol solution is mixed with 100.0 mL of 0.5000 M aqueous sodium hydroxide, the resulting solution will have a pH.

a. = 7
b. < 7
c. > 7
d. 0

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Based on our data, we think this problem is relevant for Professor Guloy's class at UH.