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3.3 Types of chemical reactions

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Question 4

Sodium carbonate, Na2CO3\mathrm{Na_{2}CO_{3}}Na2​CO3​, reacts with hydrochloric acid, HCl\mathrm{HCl}HCl, to form sodium chloride, NaCl\mathrm{NaCl}NaCl, water, H2O\mathrm{H_{2}O}H2​O, and carbon dioxide, CO2\mathrm{CO_{2}}CO2​.

In the order Na2CO3\mathrm{Na_{2}CO_{3}}Na2​CO3​, HCl\mathrm{HCl}HCl, NaCl\mathrm{NaCl}NaCl, H2O\mathrm{H_{2}O}H2​O, CO2\mathrm{CO_{2}}CO2​, which set of coefficients balances the equation?

[1]
A

1, 2, 1, 1, 1

B

1, 2, 2, 1, 1

C

2, 2, 2, 1, 2

D

1, 1, 1, 1, 1

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3.3 Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Types of chemical reactions

112 exam-style questions on OCR GCSE Chemistry 3.3 Types of chemical reactions, covering 3.3.1 Oxidation and reduction in terms of oxygen, 3.3.2 Acids, alkalis and neutralisation, 3.3.3 The pH scale and measuring pH, 3.3.4 Oxidation and reduction in terms of electrons, 3.3.5 Dilute and concentrated, weak and strong acids, and 3.3.6 Hydrogen ion concentration and pH. Each one has a worked solution and a mark scheme showing where the marks go.

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