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3.3 Types of chemical reactions

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Question 18
H

Which reaction is a redox reaction in terms of electron transfer, but not in terms of gain or loss of oxygen?

[1]
A

2Na+Cl2→2NaCl\mathrm{2Na + Cl_{2} \rightarrow 2NaCl}2Na+Cl2​→2NaCl

B

2Mg+O2→2MgO\mathrm{2Mg + O_{2} \rightarrow 2MgO}2Mg+O2​→2MgO

C

NaOH+HCl→NaCl+H2O\mathrm{NaOH + HCl \rightarrow NaCl + H_{2}O}NaOH+HCl→NaCl+H2​O

D

CuO+H2SO4→CuSO4+H2O\mathrm{CuO + H_{2}SO_{4} \rightarrow CuSO_{4} + H_{2}O}CuO+H2​SO4​→CuSO4​+H2​O

Markscheme

3.3 Types of chemical reactions Questions

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

53 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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