Question

4. At a certain temperature, the reaction: 2NO(g) + Bra(e) 2NOBr(g), has k, = 3.20 x 10-2 If the partial pressures of NO and Bry at equilibrium are 3.70 atm and 1.85 atm, respectively, what is the partial pressure of NOBr at equilibrium? (A) 0.219 atm (B) 0.810 atm (C) 0.900 atm (D) 28.1 atm 5. For the reaction: N2(g) + 3H2(g) + 2NH3(g), K = 0.062 at 523 K. What is the value of the equilibrium constant Ko at 523 K? (A) 3.4 x 10-5 (B) 1.4 x 10- (C) 1.1 x 102 (D) 2.7 6. The following is an exothermic reaction: N2(g) + 3H2(g) 2 NH3(g); AH = -92 kJ Which of the following conditions will increase the yield of NH, at equilibrium? (A) Carrying out the reaction at high temperature and high pressure in the presence of a catalyst; (B) Carrying out the reaction at low temperature and low pressure in the presence of a catalyst; (C) Carrying out the reaction at high temperature and low pressure in the presence of a catalyst; (D) Carrying out the reaction at high pressure and low temperature in the presence of a catalyst; The production of hydrogen gas from methane and steam is carried out by the following reaction: CH(g) + H2O(g) = CO(g) + 3H2(g); AHT - 205 kJ Under what reaction conditions will increase the yield of H, gas at equilibrium? (A) The reaction is carried out at high temperature and high pressure in the presence of a catalyst; (B) The reaction is carried out at low temperature and low pressure in the presence of a catalyst; (C) The reaction is carried out at low temperature but high pressure in the presence of a catalyst; (D) The reaction is carried out at high temperature but low pressure in the presence of a catalyst.

Answer 1

2 No ly) + Br. - 2 NOB KO: (PNobil? [PNO PBre] 3.2 X10? [PNOBY 12 (3.70)*(1.85) PENBr) ² - 0.810 (0.810) 0.900 atn PIN OBY] = - (C)