Predict the sign of the entropy change for each of the following chang

1.	Predict the sign of the entropy change for each of the following changes of state.(a) Hg(l)→ Hg(g)(b) AgNO3 (S)→ AgNO3 (aq)(c) I2(g) l2 → (S)(d) C(graphite)→C(diamond)
Answer» (a) +ve (because gases are highly random than liquid) ΔS = S(g) - S(e) = +ve (b) +ve (because ions are in more random state in aqueous solution as compared to solid state). ΔS = S(aq) - S(s) = +ve . (c) -ve (because gases are highly more random than solid). ΔS = S(s) - S(g) = -ve. (d) zero, diamond and graphite both are solid and in crystalline state.

Predict the sign of the entropy change for each of the following changes of state.(a) Hg(l)→ Hg(g)(b) AgNO3 (S)→ AgNO3 (aq)(c) I2(g) l2 → (S)(d) C(graphite)→C(diamond)

Answer»

(a) +ve (because gases are highly random than liquid)

ΔS = S(g) - S(e) = +ve

(b) +ve (because ions are in more random state in aqueous solution as compared to solid state).

ΔS = S(aq) - S(s) = +ve .

ΔS = S(s) - S(g) = -ve.

(d) zero, diamond and graphite both are solid and in crystalline state.

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Predict the sign of the entropy change for each of the following changes of state.(a) Hg(l)→ Hg(g)(b) AgNO3 (S)→ AgNO3 (aq)(c) I2(g) l2 → (S)(d) C(graphite)→C(diamond)

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