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Give reason for the following:
(a)Neither q nor w is a state function but q + w is a state function.
(b)A real crystal has more entropy than an ideal crystal.

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Chemistry Tutor

B)real crystal has more disorder than ideal. a)q + w=u which is internal energy which is a state function
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a) q+w=Δu as Δu is a state function , hence q+w is a state function.. b) A real crystal has some disorder due to the defects in it's structural arrangements whereas ideal crystal doesn't have any problem.hence a real crystal has more entrophy than ideal crystal...
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(A) q + w = ΔU. As ΔU is a state function, hence q + w is a state function. (B) An ideal crystal has a perfect order of its constituent particles while a real crystal has less order because of some defects. Therefore, a real crystal has more entropy than an ideal crystal.
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