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Introducing chemical reactions

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Question 10

Hydrochloric acid, $HCl\text{HCl}$ , reacts with calcium, $Ca\text{Ca}$ .

Calcium chloride and hydrogen are made.

What is the balanced symbol equation for this reaction?

$2HCl+Ca→CaCl+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}_2$

$2HCl+Ca→CaCl+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}$

$2HCl+Ca→CaCl2+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}_2$

$2HCl+Ca→CaCl2+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}$

Markscheme

Introducing chemical reactions Questions

GCSE
Chemistry
Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry Introducing chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

Introducing chemical reactions

Question bank

Introducing chemical reactions

Easy Medium Hard

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

Question 10

Hydrochloric acid, $HCl\text{HCl}$ , reacts with calcium, $Ca\text{Ca}$ .

Calcium chloride and hydrogen are made.

What is the balanced symbol equation for this reaction?

$2HCl+Ca→CaCl+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}_2$

$2HCl+Ca→CaCl+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}$

$2HCl+Ca→CaCl2+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}_2$

$2HCl+Ca→CaCl2+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}$

Markscheme

Introducing chemical reactions Questions

GCSE
Chemistry
Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry Introducing chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.