A 25.00 ml solution containing 0.033 M sodium acetate is titrated with a 0.098 M solution of HCl. How mar milliliters of HCl are required to reach the endpoint?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?