Question

For the reaction PCl5(g)-> PCl3(g)+Cl2(g)
(1) dH=dE
(2) dH>dE
(3)dH (4) can't be predicted

Answer 1

ⓐⓝⓢⓦⓔⓡ ⓘⓢ ⓝⓤⓜⓑⓔⓡ( b)..........

Answer 2

answer is Dh>De...........