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In a weak acid-strong base titration, what is the pH at the equivalence point?
In a weak acid-strong base titration, what is the pH at the equivalence point?
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Practice Questions
1 question
Q1
In a weak acid-strong base titration, what is the pH at the equivalence point?
Less than 7
Equal to 7
Greater than 7
Cannot be determined
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In a weak acid-strong base titration, the pH at the equivalence point is greater than 7 due to the formation of a weak conjugate base.
Questions & Step-by-step Solutions
1 item
Q
Q: In a weak acid-strong base titration, what is the pH at the equivalence point?
Solution:
In a weak acid-strong base titration, the pH at the equivalence point is greater than 7 due to the formation of a weak conjugate base.
Steps: 7
Show Steps
Step 1: Understand that a titration involves mixing an acid with a base.
Step 2: Identify that in this case, we have a weak acid and a strong base.
Step 3: Know that at the equivalence point, all the weak acid has reacted with the strong base.
Step 4: Recognize that this reaction produces a weak conjugate base from the weak acid.
Step 5: Remember that weak conjugate bases can accept protons (H+) from water, which increases the concentration of hydroxide ions (OH-).
Step 6: Conclude that because of the presence of the weak conjugate base, the solution will be basic.
Step 7: Therefore, the pH at the equivalence point will be greater than 7.
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