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  • Which of the following liberate  gas on reaction with HCl?<s

Which of the following liberate \mathrm{H_2} gas on reaction with HCl?

Option: 1

Ag


Option: 2

Cu


Option: 3

Au


Option: 4

Al


Answers (1)

best_answer

As we have learnt,

Aluminium reacts with diluted HCl  and liberates H2 gas.

\mathrm{2Al+6HCl\rightarrow 2AlCl_3+3H_{2}}

Elements with lower reactivity are not able to displace hydrogen from acids and H2 gas is not obtained.

\mathrm{Ag,Au,Cu+HCl\rightarrow No\: Reaction}

Therefore,option (4) is correct.

Posted by

Anam Khan

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