WBJEE 2013 Chemistry Solved Paper

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Question : 59 of 60

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In basic medium the amount of Ni2+ in a solution can be estimated with the dimethylglyoxime reagent. The correctstatement(s) about the reaction and the product is(are)

In ammoniacal solution Ni2+ salts give cherry-red precipitate of nickel (II) dimethylglyoximate
Two dimethylglyoximate units are bound to one Ni2+
In the complex two dimethylglyoximate units are hydrogen bonded to each other
Each dimethylglyoximate unit forms a six-membered chelate ring with Ni2+

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