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6.4 Chemical cells and fuel cells

6.4 Chemical cells and fuel cells

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Question 12

Hydrogen and oxygen gases react within a hydrogen fuel cell to produce electricity.

Which chemical equation represents the overall reaction that occurs in this fuel cell?

A

2H2O→2H2+O22\text{H}_2\text{O} \rightarrow 2\text{H}_2 + \text{O}_22H2​O→2H2​+O2​

B

H2+O2→H2O2\text{H}_2 + \text{O}_2 \rightarrow \text{H}_2\text{O}_2H2​+O2​→H2​O2​

C

2H2+O2→2H2O2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}2H2​+O2​→2H2​O

D

H++OH−→H2O\text{H}^+ + \text{OH}^- \rightarrow \text{H}_2\text{O}H++OH−→H2​O

Markscheme

6.4 Chemical cells and fuel cells Questions

  1. GCSE
  2. /Chemistry
  3. /6.4 Chemical cells and fuel cells

42 exam-style questions on Edexcel GCSE Chemistry 6.4 Chemical cells and fuel cells, covering 6.4.1 Chemical cells and fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.

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