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  • Which of the following give white precipitate when is added to its aqueous solution?<div clas

Which of the following give white precipitate when \mathrm{HCl} is added to its aqueous solution?

Option: 1

\mathrm{Hg}^{+}


Option: 2

\text{Mg}^{2+}


Option: 3

\text {Zn}^{2+}


Option: 4

\text{Cd}^{2+}


Answers (1)

best_answer

As we have learnt,

Basic Radicals present in first group are precipitated in the form of their chlorides upon reaction with HCl.

2 \mathrm{Hg}+2 \mathrm{HCl} \rightarrow \underset{\text { white ppt. }}{\mathrm{Hg}_{2} \mathrm{Cl}_{2}}+2 \mathrm{H}^{+}

Hence, the correct answer is Option (1)

Posted by

Divya Prakash Singh

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