Which of the following shows little or no net reaction when the volume of the system is decreased?
A. \(2 O _{3( g )} \leftrightarrow 2 HI _{\text {(g) }}\) B. \(2 NO _{2( g )} \leftrightarrow N _{2} O _{4( g )}\) C. \(H _{2( g )}+ I _{2( g )} \leftrightarrow 2 HI ( g )\) D. \(PCl _{5( g )} \leftrightarrow PCl _{3( g )}+ Cl _{2( g )}\)
Correct Answer: C
Explanation
Change in volume or pressure affects reaction in which there is a net change in the no of moles of gaseous species or The no of moles of gaseous product \(\left(2 HI _{( g )}\right)\) is equal to the no of moles of reactants \(\left( H _{2( g )}+ I _{2( gr )}\right)\)
