Q.

Which one of the following is incorrect for ideal solution?

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a

ΔHmix =0

b

ΔUmix=0

c

ΔP=Pobs -Pcalculated by Raoult's law =0

d

ΔGmix =0

answer is D.

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Detailed Solution

For an ideal solution, ΔHmix=0,ΔVmix=0, Now, ΔUmix =ΔHmix -PΔVmix ∴ΔUmix =0 Also,for an ideal solution, pA=xApA°,pB=xBpB°∴ΔP=Pobs -Pcalculated by =0ΔGmix=ΔHmix-TΔSmix For an ideal solution, ΔSmix≠0∴ΔGmix≠0
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Which one of the following is incorrect for ideal solution?