A-LevelChemistryElectrochemistryOct/Nov 2020Paper 1 Q91 Mark
Chlorine dioxide, ClO₂, reacts with sodium hydroxide in the reaction shown. 2ClO₂ + 2OH¯ → ClO₂⁻ + ClO₃⁻ + H₂O Which statement correctly describes this redox reaction?
AChlorine atoms are oxidised and oxygen atoms are reduced.
BChlorine atoms are reduced and oxygen atoms are oxidised.
CSome chlorine atoms are oxidised and some chlorine atoms are reduced.
DSome oxygen atoms are oxidised and some oxygen atoms are reduced.
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The correct answer is C. This question tests the candidate's understanding of electrochemistry within the Chemistrysyllabus. The examiner's mark scheme requires...
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