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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 154

Sodium carbonate reacts with dilute hydrochloric acid to produce sodium chloride, water, and carbon dioxide.

The chemical equation for this reaction is:

Na2CO3(s)+2HCl(aq)→2NaCl(aq)+H2O(l)+CO2(g) \text{Na}_2\text{CO}_3(\text{s}) + 2\text{HCl}(\text{aq}) \rightarrow 2\text{NaCl}(\text{aq}) + \text{H}_2\text{O}(\text{l}) + \text{CO}_2(\text{g}) Na2​CO3​(s)+2HCl(aq)→2NaCl(aq)+H2​O(l)+CO2​(g)

Which of the following correctly identifies the physical state of each substance as indicated by the state symbols in the chemical equation?

A

sodium carbonate: solid | hydrochloric acid: liquid | sodium chloride: aqueous | water: liquid | carbon dioxide: gas

B

sodium carbonate: solid | hydrochloric acid: aqueous | sodium chloride: aqueous | water: liquid | carbon dioxide: gas

C

sodium carbonate: solid | hydrochloric acid: aqueous | sodium chloride: solid | water: liquid | carbon dioxide: gas

D

sodium carbonate: aqueous | hydrochloric acid: liquid | sodium chloride: aqueous | water: aqueous | carbon dioxide: gas

Markscheme

1.1 Formulae, equations and hazards Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 Formulae, equations and hazards

183 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.

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