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9.15 Suppose that a gas phase reaction 2A(g)2B(g)+C(g) follows second-order kinetics and goes to completion. If the reaction is allowed to proceed in a constant volume vessel at an initial pressure of 2 bar (only A is initially present), what will be the partial pressures of A,B, and C and the total pressure at t=t1/2,2t1/2,3t1/2, and infinity