Reactions of acids
3 marks · EasyThe table shows the effects of adding different metals to dilute sulfuric acid.
| Metal | Observation |
|---|---|
| Calcium | Fizzes rapidly, gas produced, solid disappears |
| Copper | No reaction |
| Iron | Slow fizzing, solid gradually disappears |
State which metal does not react with dilute sulfuric acid.
Write the balanced chemical equation for the reaction that takes place with calcium.
Name the gas produced in the reaction with calcium.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) Copper
(b) Ca(s) + H_2SO_4(aq) \rightarrow CaSO_4(aq) + H_2(g)
(c) Hydrogen
Common mistakes: Wrong gas named as oxygen or carbon dioxide
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Marking points
B1 (a) · 1 mark · Identifies copper as not reacting.
B2 (b) · 1 mark · Writes correct balanced equation for calcium and sulfuric acid.
B3 (c) · 1 mark · Names hydrogen as the gas produced.
Worked solution
a) Copper does not react.
b) Ca(s) + H_2SO_4(aq) \rightarrow CaSO_4(aq) + H_2(g)
c) The gas produced is hydrogen.