Course home

Acids and bases (A-level only)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

Question 42

Equal volumes of two solutions, each with a concentration of 0.20 mol dm^-3, are mixed together at 298 K.

Which pair of solutions, when mixed, forms a solution with a $pH>7\text{pH} > 7$ ?

$KOH\text{KOH}$ and $CH3–CH2COOH\text{CH}_3–\text{CH}_2\text{COOH}$

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

$HCl\text{HCl}$ and $CH3NH2\text{CH}_3\text{NH}_2$

$HBr\text{HBr}$ and $HCOONa\text{HCOONa}$

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.

Question bank