PCl\(_5\)\((_g\)) → PCl\(_3\)\((_s\))  +  Cl\(_2\)\((_g\))

In the equation above, the reaction will be spontaneous if

a

ΔH = constant

b

ΔH = + ve

c

ΔH = zero

d

ΔH = - ve

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Explanation

Correct Option
d

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Discussions (3)

DOMI101
2 months ago

HEII I dont understand this
Pls can we get the video
i understand better if taught in person

CharlesMicheal123
2 months ago

My School this is wrong the right Answer is B ✅
Because from Gas to solid + gas — entropy goes up, so ΔS is +, then ΔG = ΔH – TΔS: for spontaneity, ΔH can be + if TΔS > ΔH

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