Assertion : $B r_{2}$ is oxidized to $B r {O_{3}}^{-}$ in basic medium. Reason: When $B r_{2}$ is passed into hot $N a O H$ , its disproportionate to $B r^{-}$ and $B r {O_{3}}^{-}$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
When ${B r}_{2}$ is passed into hot $N a O H$ ,
${0 B r}_{2} + N a O H ⟶ N a - 1 B r + N a + 5 B r O_{3} + H_{2} O$
IN basic medium, ${0 B r}_{2}$ is oxidized to $+ 5 B r$ & reduced to $- 1 B r$
Therefore, (A) is the correct answer.

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Assertion :Br2 is oxidized to BrO3− in basic medium. Reason: When Br2 is passed into hot NaOH, its disproportionate to Br− and BrO3−

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionWhen Br2 is passed into hot NaOH,0Br2+NaOH⟶Na−1Br+Na+5BrO3+H2OIN basic medium, 0Br2 is oxidized to +5Br & reduced to −1BrTherefore, (A) is the correct answer.

Assertion : $B r_{2}$ is oxidized to $B r {O_{3}}^{-}$ in basic medium. Reason: When $B r_{2}$ is passed into hot $N a O H$ , its disproportionate to $B r^{-}$ and $B r {O_{3}}^{-}$