Concentrated hydrochloric acid is oxidised by manganese(oxide, MnO2. What are two products of this reaction?

5070_s22_qp_11

MCQ

2022

Paper 1, Variant 1

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An excess of aqueous iodide ions is added to acidified aqueous potassium manganate(. Which row is correct?

5070_s22_qp_12

MCQ

2022

Paper 1, Variant 2

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Iron(ions react with chlorine. 2Fe2++ Cl 2→ 2Fe3++ 2Cl –Which statement about this reaction is correct?

5070_s23_qp_12

MCQ

2023

Paper 1, Variant 2

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Separate samples of hydrogen peroxide are added to aqueous potassium iodide and to acidified potassium dichromate(. The iodide ions are oxidised and dichromate(ions are reduced. What colour changes are seen?

5070_w05_qp_1

MCQ

2005

Paper 1, Variant 0

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Which compound, when added to aqueous iron(sulphate, takes part in a redox reaction?

5070_w06_qp_1

MCQ

2006

Paper 1, Variant 0

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The ionic equation shows the reaction between potassium iodide and iron(chloride. 2Fe3++ 2I –→ 2Fe2++ I2Which terms describe the changes to the iron(ions and iodide ions?

5070_w09_qp_1

MCQ

2009

Paper 1, Variant 0

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In which reaction is nitric acid acting as an oxidising agent?

5070_w10_qp_12

MCQ

2010

Paper 1, Variant 2

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In separate experiments sulfur dioxide, a reducing agent, was passed through acidified solutions of potassium dichromate(and potassium manganate(. Which pair describes the colour changes observed in the experiments?

5070_w12_qp_12

MCQ

2012

Paper 1, Variant 2

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In which reaction is nitric acid acting as an oxidising agent?

5070_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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Iron(ions react with chlorine. 2Fe2++ Cl 2→ 2Fe3++ 2Cl –Which statement about this reaction is correct?

5070_w16_qp_12

MCQ

2016

Paper 1, Variant 2

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