Subject - Chemistry:

Basics

MCQ - 32-2218

Question:

Which anions that contain chlorine are produced when chlorine gas is passed into cold, dilute sodium hydroxide solution?

Cl−, ClO₃−
OCl−, Cl−
ClO₃−, ClO₄−, Cl−
OCl−, Cl−

Correct Answer: B

Explanation:

The ionic equation for the reaction is The chlorine has disproportionated. The answer would be A if the sodium hydroxide solution had been hot, since OCI- ions disproportionate on heat ion to chloride ions and chlorate (V) ions.

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