Statement that is true is : D). Solution A has more concentrated acid than the solution B and acid in solution A is weaker acid than that in solution B.
The last statement is true and states that a solution A is comparatively more concentrated than solution B but the acid present in solution A is feeble.
This is because that solution A is excessively concentrated which requires an extra NaOH to attain the point of equivalence.
And as the pH that exists at the point of equivalence point is more for solution A, therefore it implies that solution A carries a weaker acid.
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Note: The question given on portal is incomplete. Here is the complete question.
Question: Equal volumes of two monoprotic acid solutions (A and B) are titrated with identical NaOH solutions. The volume to reach the equivalence point for solution A is twice the volume required to reach the equivalence point for solution B, and the pH at the equivalence point of solution A is higher than the pH at the equivalence point for solution B. Which statement is true?
A) The acid in solution A is less concentrated than in solution B and is also a weaker acid than that in solution B.
B) The acid in solution A is more concentrated than in solution B and is also a stronger acid than that in solution B.
C) The acid in solution A is less concentrated than in solution B and is also a stronger acid than that in solution B.
D) The acid in solution A is more concentrated than in solution B and is also a weaker acid than that in solution B.
