Paper 2 · Stoichiometry and Mole Calculations

Chlorine gas is bubbled through sodium bromide solution: Cl2 + 2NaBr → Br2 + 2NaCl. What type of reaction is this?

Aneutralisation

Bprecipitation

Credox

Dhydrolysis

Explanation: Chlorine displaces bromine from sodium bromide: chlorine is reduced (gains electrons) and bromide ions are oxidised (lose electrons), so this is a redox reaction.

Derived from ZIMSEC Chemistry 5071/2 Paper 2 Theory, November 2014, Q2

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Chlorine gas is bubbled through sodium bromide solution: Cl2 + 2NaBr → Br2 + 2NaCl. What type of reaction is this?

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