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 25.0 °C. A reaction vessel initially contains 250.0 mL of 0.100 M AB that is allowed to react to form the gaseous product. The product is collected over water at 25.0 °C. How much time is required to produce 200.0 mL of the products at a barometric pressure of 755.1 mmHg?(The vapor pressure of water at this temperature is 23.8 mmHg.)

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