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Zinc II Oxide

Which of the ...

Question

Which of the following gives white precipitate when $H C l$ is added to its aqueous solution?

A

H g^{+}

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B

M g^{2 +}

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C

Z n^{2 +}

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D

C d^{2 +}

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Solution

The correct option is A $H g^{+}$
$2 H g + 2 H C l \to H g_{2} C l_{2} white ppt. + H_{2} ↑$

$H g^{+}$ ion gives white precipitate when $H C l$ is added to its aqueous solution.

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