Section 4. Electrochemistry for Chemistry, O Level - revisedeck

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4. Electrochemistry

A section of Chemistry, 5070

Listing 10 of 236 questions

It has been suggested that the cars of the future could be powered by fuel cells. One type of fuel cell uses the chemical reaction between oxygen and hydrogen to produce electricity. What would be a disadvantage of using this type of fuel cell to power a car?

5070_w13_qp_12

MCQ

2013

Paper 1, Variant 2

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The formation of liquid water from hydrogen and oxygen may occur in three stages. 2H2+ O2→ 4H+ 2O2 4H+ 2O→ 2H2O3 2H2O→ 2H2O(Which stages are endothermic?

5070_w17_qp_11

MCQ

2017

Paper 1, Variant 1

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The formation of liquid water from hydrogen and oxygen may occur in three stages. 2H2+ O2→ 4H+ 2O2 4H+ 2O→ 2H2O3 2H2O→ 2H2O(Which stages are endothermic?

5070_w17_qp_12

MCQ

2017

Paper 1, Variant 2

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Pure oxygen is needed by many industries. How is pure oxygen obtained in large amounts for such uses?

5070_w21_qp_12

MCQ

2021

Paper 1, Variant 2

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Which row describes one advantage and one disadvantage of using a hydrogen-oxygen fuel cell to power a road vehicle?

5070_w24_qp_11

MCQ

2024

Paper 1, Variant 1

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What is a disadvantage of using a hydrogen-oxygen fuel cell to power a car?

5070_w24_qp_12

MCQ

2024

Paper 1, Variant 2

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Questions Discovered

236