JAMB Chemistry 2011 Objective — Question 33

Question 33 of 49 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2011 Objective paper, with the correct answer and a full explanation.

The bleaching action of chlorine gas is effective due to the presence of

A. A. oxygen
B. B. hydrogen chloride
C. C. waterCorrect
D. D. air

Explanation

The bleaching action of chlorine gas is effective due to the presence of water: Cl2+H2O→HCl+HOCl, then HOCl + coloured material → HCl+[O]+bleached material.

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