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Acids and bases (A-level only)

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Question 6

A 0.10 mol dm^-3 aqueous solution of an acid is added slowly to 25 cm³ of a 0.10 mol dm^-3 aqueous solution of a base. Which acid-base pair has the lowest pH at the equivalence point?

A

$HCOOH\text{HCOOH}$ and $KOH\text{KOH}$

B

$HCOOH\text{HCOOH}$ and $NH3\text{NH}_3$

C

$HNO3\text{HNO}_3$ and $KOH\text{KOH}$

D

$HNO3\text{HNO}_3$ and $NH3\text{NH}_3$

Markscheme

Acids and bases (A-level only) Questions

A Level
Chemistry
Acids and bases (A-level only)

77 exam-style questions on AQA A Level Chemistry Acids and bases (A-level only), covering Brønsted–Lowry acid–base equilibria in aqueous solution (A-level only), Definition and determination of pH (A-level only), The ionic product of water, $K_w$ (A-level only), Weak acids and bases $K_a$ for weak acids (A-level only), pH curves, titrations and indicators (A-level only), and Buffer action (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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