Question

. Indicate whether you would expect the entropy of the system to increase or decrease in the following processes. Give reasons for your answer : 4 (i) H2O (l, 373 K) ® H2O (g, 373 K) (ii) C6H5COOH (l, 394 K) ® C6H5COOH (s, 394 K) (iii) 2SO2 (g) + O2 (g) ® 2SO3 (g) (iv) Cu (s, 298 K) ® Cu (s, 350 K)

Answer 1

Dry ice is frozen CO2 gas. The freezing temperature at normal sea level air pressure is -78.5 degrees C (-109.3 degrees F).

conversion of CO2(g) into dry ice is correct.