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2.5 mol liquid water (heat capacity =4.2JK-1g-1) is heated from 27°C to 87°C.Calculate entropy change
Asked by urmilabhatia997 | 30 Jan, 2022, 10:27: AM
answered-by-expert Expert Answer
Entropy is calculated by formula-
 
increment S equals n C subscript p space cross times l n open parentheses T subscript 2 over T subscript 1 close parentheses T subscript 1 equals 27 to the power of o C equals 300 space K T subscript 2 equals 87 to the power of o C equals 360 space K C subscript p space space equals space M o l a r space m a s s cross times C subscript P m end subscript space space space space space equals 18 cross times 4.2 n equals 2.5 space m o l e increment S equals 2.5 cross times 18 cross times 4.2 cross times l n open parentheses 360 over 300 close parentheses increment S equals 2.5 cross times 18 cross times 4.2 cross times l n left parenthesis 0.18 right parenthesis space space space space space space space equals space 34.025 space J divided by K
 
Answered by Ravi | 31 Jan, 2022, 05:33: PM

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