Which of the following would you predict to have a positive value for δs?
a. agcl(s) → ag+(aq) + cl-(aq)
b. h2o(g) → h2o(l)
c. 2 na(s) + cl2(g) → 2nacl(s)
d. 2 na(s) + cl2(g) → 2nacl(s)

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon