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Verified answer
Diket :Kalor dari suhu panas, Q1 = 1500 J
Suhu panas, T1 = 500 K
Suhu dingin, T2 = 300 K
Tanya :
Perubahan entropi,
ΔS = __?
Jawab :
Step 1
---------
Cari dulu kalor lewat suhu dingin, Q2 = __?
Gunakan rumus :
Q2/Q1 = T2/T1
Q2/1500 = 300/500
Q2/1500 = 3/5
Q2 = (3/5)•1500
Q2 = 900 J
Step 2
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Perubahan kalor,
ΔQ = Q1 - Q2
ΔQ = 1500 - 900
ΔQ = 600 J
Step 3
---------
Perubahan suhu,
ΔT = T1 - T2
ΔT = 500 - 300
ΔT = 200 K
Step 4
---------
Perubahan entropi
ΔS = ΔQ/ΔT
ΔS = 600 / 200
ΔS = 3 J/K
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