Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Dilute nitric acid acts like a standard acid in some reactions, but in other reactions it does not show typical acid behaviour.
(a)[4]

Describe the visible changes you would observe if excess dilute nitric acid is added separately to solid samples of copper(II) carbonate and copper(II) oxide and the mixtures are then warmed.

(b(i))[2]

The chemical equation for the reaction between copper and dilute nitric acid is partly shown. Complete the chemical equation by inserting the formula of copper(II) nitrate and balancing the equation.\n\n$\text{Cu(s)} + 8\text{HNO}_3\text{(aq)} \rightarrow \dots\dots\dots\text{(aq)} + 4\text{H}_2\text{O(l)} + 2\text{NO(g)}$

(b(ii))[1]

How does the reaction of dilute nitric acid with copper differ from the reaction of a typical metal with a typical acid?

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: copper(II) carbonate: effervesces / bubbles / fizzes and dissolves / disappears

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