alleryWhy is Mohr's salt solution titrated cold?
AHeating slows the reaction
BThe salt would crystallise
CKMnO4 would decompose
DAir may oxidise Fe2+ to Fe3+
Answer & Solution
Correct answer: D. Air may oxidise Fe2+ to Fe3+
The reaction is already fast at room temperature, and heating would let air oxidise ferrous ions and cause error.
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