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  • In which one of the following reactant predominates over products ? Option: 1 <img alt="H_2 + Al_2 \rightleftharpoons 2HCl \: \: \: \: \: \: k_c

In which one of the following reactant predominates over products ? 

Option: 1

H_2 + Al_2 \rightleftharpoons 2HCl \: \: \: \: \: \: k_c = 4 \times 10 ^{31}


Option: 2

H_2 + Br_2 \rightleftharpoons 2HBr \: \: \: \: \: \: k_c = 5.4 \times 10 ^{18}


Option: 3

N_2 + O_2 \rightleftharpoons 2NO \: \: \: \: \: \: k_c = 4.8 \times 10 ^{31}


Option: 4

both a and b 


Answers (1)

best_answer

As we have learned

Composition of equilibrium when Kc < 0.001 -

Reactants predominates over products i.e. If Kc is very small, the reaction proceeds rarely.

- wherein

e.g. \:N_{2}+O_{2}\rightleftharpoons 2NO

K_{c}=4.8\times 10^{-31}

 

 In Kc ios very small then reaction proceeds rarely or say , reactant predominates over product 

 

Posted by

Pankaj

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