Verified Solution • 2025–26 Session moderate

QAIPMT-2008-Ch-2193: NEET 2008 Chemistry - Class 11 AIPMT-2008-Ch-2193 Solution: For the gas phase reaction, \(PCl_5(g) PCl_3(g)+Cl_2(g)\) which …

For the gas phase reaction, PCl5(g)⇌PCl3(g)+Cl2(g)PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g) which of the following conditions are correct?

Multiple Choice Options

  • A ΔH<0\Delta H<0 and ΔS<0\Delta S<0
  • B ΔH>0\Delta H>0 and ΔS<0\Delta S<0
  • C ΔH=0\Delta H=0 and ΔS<0\Delta S<0
  • D ΔH>0\Delta H>0 and ΔS>0\Delta S>0

Step-by-Step Verified Solution

_ H = _ E + _ n g RT _ n g = (1 + 1) � (1) = 1 _ _ H = _ E + RT Thus, _ H is a positive quantity i.e., �H > 0. Now one mole of gaseous reactant dissociate into two moles of gaseous products thus, entropy increases i.e., _ S > 0.

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring