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3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

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Question 15
F

Sodium carbonate reacts with hydrochloric acid to produce sodium chloride, water and carbon dioxide. Which equation has the correct formulae and is balanced?

[1]
A

NaCO3+2HCl→2NaCl+H2O+CO2\text{NaCO}_3 + 2\text{HCl} \rightarrow 2\text{NaCl} + \text{H}_2\text{O} + \text{CO}_2NaCO3​+2HCl→2NaCl+H2​O+CO2​

B

Na2CO3+2HCl→2NaCl+H2O+CO2\text{Na}_2\text{CO}_3 + 2\text{HCl} \rightarrow 2\text{NaCl} + \text{H}_2\text{O} + \text{CO}_2Na2​CO3​+2HCl→2NaCl+H2​O+CO2​

C

Na2CO3+HCl→NaCl+H2O+CO2\text{Na}_2\text{CO}_3 + \text{HCl} \rightarrow \text{NaCl} + \text{H}_2\text{O} + \text{CO}_2Na2​CO3​+HCl→NaCl+H2​O+CO2​

D

Na2CO3+2HCl→2NaCl+H2CO3\text{Na}_2\text{CO}_3 + 2\text{HCl} \rightarrow 2\text{NaCl} + \text{H}_2\text{CO}_3Na2​CO3​+2HCl→2NaCl+H2​CO3​

Markscheme

3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations Questions

  1. GCSE
  2. /Chemistry
  3. /3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

40 exam-style questions on AQA GCSE Chemistry 3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations, covering 3.1.1 Conservation of mass and balanced chemical equations, 3.1.2 Relative formula mass, 3.1.3 Mass changes when a reactant or product is a gas, and 3.1.4 Chemical measurements. Each one has a worked solution and a mark scheme showing where the marks go.

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