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At 25 C, Kp = 5.3 x 105 for the following reaction: N2(g) + 3 H2(g) = 2 NH3(9) When a certain partial pressure of NH3 is placed in an otherwise empty rigid vessel at 25C equilibrium is reached when 0.406 of the original NH3 remains. What was the initial partial pressure of NH3 before any decomposition occurred? Answer: Which of the following is the weakest base? O a HC204 ob.CO, C. CN d. F e. HPO 2