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Q.

${Cl}_{2} + {OH}^{-} ⟶ {Cl}^{-} + {ClO}_{3}^{-}$ What is the coefficient for ${OH}^{-}$ when this equation is balanced with the smallest integer coefficients?

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a

2

b

6

c

3

d

4

answer is D.

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Detailed Solution

The Given reaction can be balanced as,

$3 {Cl}_{2} + 6 {OH}^{-} ⟶ 5 {Cl}^{-} + {ClO}_{3}^{-} + 3 H_{2} O$

Here, coefficient of ${OH}^{-}$ ion is 6.

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