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0°C पर बर्फ एवं जल साम्यावस्था में है तो ΔH = 6.0kJmol-1 है। बर्फ को जल में परिवर्तित करने के लिए ΔS एवं ΔG का मान ज्ञात कीजिये।

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चूँकि बर्फ तथा जल साम्यावस्था में हैं अत: ΔG = 0 हम जानते हैं कि 

ΔG = ΔH - TΔS 

0 = ΔH - TΔS 

TΔS = ΔH 

ΔS = ΔΗ /T 

ΔH = 6.0kJ mol-1 = 6000 J mol-1

अतः \(\Delta S = \frac{6000}{273}\) 

21.97 JK-1 mol-1

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