Questions: The pH at the equivalence point for a weak acid-strong base titration is of the weak acid. This species reacts with H2O to form a(n) solution. less; acid; acidic greater; acid; basic greater; base; basic less; base; acidic
Transcript text: Multiple Choice Question
The pH at the equivalence point for a weak acid-strong base titration is $\qquad$
$\qquad$ of the weak acid. This species reacts with $\mathrm{H}_{2} \mathrm{O}$ to form a(n) $\qquad$ solution.
less; acid; acidic
greater; acid; basic
greater; base; basic
less; base; acidic
Solution
Solution Steps
Step 1: Understanding the Titration Process
In a weak acid-strong base titration, the weak acid is neutralized by the strong base, resulting in the formation of water and the conjugate base of the weak acid. At the equivalence point, all the weak acid has been converted to its conjugate base.
Step 2: Analyzing the pH at the Equivalence Point
The pH at the equivalence point in a weak acid-strong base titration is determined by the nature of the conjugate base formed. Since the conjugate base is a weak base, it will react with water to produce hydroxide ions, making the solution basic.
Step 3: Determining the Correct Answer
Given the options, the correct description of the pH at the equivalence point is that it is greater than 7 (basic) due to the presence of the conjugate base reacting with water.