For the questions below, indicate a single correct answer in the box ( 2 marks each). (a) The thermodynamic measure of disorder is: (i) work (ii) enthalpy (iii) free energy (iv) entropy (b) For the process H2O(l)H2O(g) at 100C and 1atm, the sign of the entropy change is: (i) positive (ii) cannot be determined from the given information (iii) zero (iv) negative (c) If a reaction for which Hr=+100kJmol1 and Sr=+100JK1mol1 takes place at 100 K, what is the entropy change of the surroundings in JK1mol1 ? (i) 100 (ii) +1000 (iii) 1000 (iv) +100 (d) "As a system approaches absolute zero temperature (0K), all processes cease and the entropy (disorder) of the system approaches a minimum value." This description refers to which law of thermodynamics? (i) first (ii) second (iii) third (iv) zeroth