Which is not blackened by atmosphere $H_{2} S$ ?

P b (C H_{3} C O O)_{2}

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Z n (C H_{3} C O O)_{2}

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C u (C H_{3} C O O)_{2}

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H g (C H_{3} C O O)_{2}

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Solution

The correct option is B $Z n (C H_{3} C O O)_{2}$
$Z n (C H_{3} C O O)_{2}$ reacts with hydrogen sulfide to form white coloured zinc sulphide.
$Z n (C H_{3} C O O)_{2} + H_{2} S \to Z n S + 2 C H_{3} C O O H$ .
Thus, $Z n (C H_{3} C O O)_{2}$ is not blackened by $H_{2} S$ .

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