Answer to Question #292460 in Physical Chemistry for Swarna

Question

) Calculate the entropy change at a constant pressure of 1 atm when one mole of liquid 

NH3 at -40 is transformed to the gaseous state at 200 using the following data: ℃ ℃

Cp for NH3 (l) = 17.9 Cal K-1 mol-1 ; Cp for NH3(g) = (8.04 + 7.0 x 10-4 T + 5.1 x 10-6

T 2

 )Cal K-1 mol-1 ; Boiling Point of NH3 (g) = 239.7 K; ΔvapH239.7 = 5560 Cal mol-1

Answer 1

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