Question

In the reaction 2Mg+HCl---->MgCl2+H2,then rate of evalution of hydrogen gas if the concentration of HCl is doubled,will be
a)same
b)doubled
c)half
d)triple​

Answer 1

a) same because the molecule will not change there

Answer 2

Heyaa☺

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In the reaction

2Mg + HCl =》MgCl2 + H2.

If the rate of evolution of H2 is concentrated of HCl is doubled then the rate of H2 gas will also increased to doubled.

As we know that rate of reaction is directly propotional to the amount of reactants.

Option(b)=》 Doubled.

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Hope you understand....☺