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5.2 Chemical cells and fuel cells

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Question 12

A student measures the voltage of three simple cells. Apart from the factors shown in the table, all conditions are kept the same.

CellMetals used for the electrodesArea of each electrode in cm²ElectrolyteVoltage in V
Amagnesium and copper211.8
Bmagnesium and copper611.8
Czinc and copper620.9

Which conclusion can validly be drawn from these results?

[1]
A

Comparing cells A and B shows that the electrode area did not affect the voltage.

B

Comparing cells B and C shows that zinc gives a smaller voltage than magnesium with copper.

C

Comparing cells A and C shows that a larger electrode area gives a smaller voltage.

D

Comparing cells B and C shows that electrolyte 2 gives a smaller voltage than electrolyte 1.

Markscheme

5.2 Chemical cells and fuel cells Questions

  1. GCSE
  2. /Chemistry
  3. /5.2 Chemical cells and fuel cells

90 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.

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