For the Gas Phase reaction PCl5(g) ----- PCl3(g) + Cl2(g). Which of the following conditions are true?

For the Gas Phase reaction PCl5(g) ----- PCl3(g) + Cl2(g). Which of the following conditions are true? ​ 13. (3) 93 t (4) -245 For the gas phase reaction. Which of the ate correct ? (l) All O S.S•tO 219

Dear Student,

As the given reaction is the decomposition reaction of PCl5 and normally all the decomposition reaction are endothermic which requires energy to break the bond. Hence enthalpy of reaction is positive H > 0 or positive .

In the given reaction 1 mol of ​PCl5 gives the 2 mol of gaseous product. This suggests that there is the increases in the randomness or the entropy of reaction and hence can say that S > 0 or positive .

So, the correct condition is ΔH>0andΔS>0

Regards.

  • 19
What are you looking for?