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We know that the relationship between K_{c} and K_{p} is

 K_{p} = K_{c}(RT)^{\Delta n} 

What would be the value of \Delta n for the reaction NH_{4}Cl(s) \leftrightharpoons NH_{3}(g) + HCl(g)
(i) 1
(ii) 0.5                       
(iii) 1.5                    
(iv) 2

Answers (1)

The answer is the option (iv) 2

Explanation: Because, 

\Delta n= Number of moles of product - Number of moles of reactant.

=2-0

=2

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