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Introducing chemical reactions

Introducing chemical reactions

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Question 34

Calcium reacts with hydrochloric acid to produce calcium chloride and hydrogen gas.

What is the balanced symbol equation for this reaction?

A

Ca+2HCl→CaCl+H2\text{Ca} + 2\text{HCl} \rightarrow \text{CaCl} + \text{H}_2Ca+2HCl→CaCl+H2​

B

Ca+2HCl→CaCl2+H2\text{Ca} + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2Ca+2HCl→CaCl2​+H2​

C

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

D

Ca+HCl→CaCl2+H2\text{Ca} + \text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2Ca+HCl→CaCl2​+H2​

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Introducing chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /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.

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