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Q.

Which of the following relations are correct?
(A) $Δ U = q + p Δ V$
(B) $Δ G = Δ H - T Δ S$
(C) $Δ S = \frac{q_{r e v}}{T}$
(D) $Δ H = Δ U - Δ n R T$

Choose the most appropriate answer from the options given below

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a

B and D only

b

A and B only

c

C and D only

d

B and C only

answer is D.

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Detailed Solution

detailed_solution_thumbnail

$Δ G = Δ H - T Δ S, Δ S = \frac{q_{r e v}}{T} are correct$

$∆ U = q + W Where, W_{on the sys .} = + P ∆ V W_{by the sys .} = - P ∆ V ∆ H = ∆ U + ∆ nRT where, ∆ n = n_{products} - n_{reactants}$

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Which of the following relations are correct?(A) ΔU=q+pΔV(B) ΔG=ΔH−TΔS(C) ΔS=qrevT(D) ΔH=ΔU−ΔnRT Choose the most appropriate answer from the options given below