The reaction: AB(aq) → A(g) + B(g) is second-order in AB and has a rate constant of 0.0118 M-1 s-1 at 25.00C. A reaction vessel initially contains 250.0mL of 0.100M AB which is allowed to react to form gaseous product. The product is collected over water at 250C. How much time is required to produce 200.0mL of the products at a pressure of 755.1mmHg?