JEE Main2019Chemistry
Q.
The electrolytes usually used in the electroplating of gold and silver, respectively, are :
- A
[Au(CN)2]– and [AgCl2]–
- B
[Au(NH3)2]+ and [Ag(CN)2]–
- C
[Au(CN)2]– and [Ag(CN)2]–
- D
[Au(OH)4]– and [Ag(OH)2]–
Solution
[Au(CN)2]– and [Ag(CN)2]– are used in the electroplating of Au and Ag respectively.
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