Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The electrolysis of aqueous solution of\[CuB{{r}_{2}}\] using platinum electrode would lead to the evolving of (1)\[B{{r}_{2}}\]gas at anode (2) \[B{{r}_{2}}\]gas at anode and\[{{O}_{2}}\]gas at cathode (3) copper (s) at cathode (4)\[{{H}_{2}}\]gas at cathodeA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
\[CuB{{r}_{2}}\xrightarrow{{}}C{{u}^{2+}}+2Br{{~}^{-}}\] At cathode \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow[{}]{{}}Cu(s)\] At anode \[2B{{r}^{-}}\xrightarrow[{}]{{}}B{{r}_{2}}+2{{e}^{-}}\]
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