question_answer 102)

In the following questions only one option is correct. 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 An for the reaction \[N{{H}_{4}}Cl(s)\underset{{}}{\leftrightarrows}N{{H}_{3}}(g)+HCl(g)?\] (a) 1                                       (b) 0.5                                   (c) 1.5                                    (d) 2

Answer:

(d) In the reaction:  \[N{{H}_{4}}Cl(s)\underset{{}}{\leftrightarrows}N{{H}_{3}}(g)+HCl(g)\] \[\Delta {{n}_{g}}\] = Number of gaseous moles of products ? Number of gaseous moles of reactants = 2 ? 0 = 2