20. For the reaction , the value of K is 50 to 400 K and 1700 at 500 K. Which of the following option(s) is/are correct?
(a) The reaction is endothermic
(b) The reaction is exothermic
(c) If and are mixed at 400 K at partial pressures 20 bar and 2 bar respectively, more will be formed.
(d) The entropy of the system increases