During the qualitative analysis of salt with cation y 2 + , addition of a reagent X to alkaline solution of…

During the qualitative analysis of salt with cation y2+, addition of a reagent X to alkaline solution of the salt gives a bright red precipitate. The reagent X and the cation y2+ present respectively are :
  1. Dimethylglyoxime and Ni2+
  2. Dimethylglyoxime and Co2+
  3. Nessler's reagent and Hg2+
  4. Nessler's reagent and Ni2+

Solution

During the qualitative analysis of salt with cation Ni2+, addition of a reagent Dimethylglyoxime to alkaline solution of the salt gives a bright red precipitate according to the following reaction. So, The reagent X and the cation y2+ respectively are Dimethylglyoxime and Ni2+ 

 Ni2++dmgAmmonical SolutionNidmg2Red colur,

Asked in: JEE Main 2022 (24 Jun Shift 1)

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