Question

In this experiment, after the reaction went to completion, we let the solutions sit to equili- brate the temperature in flasks A and B. If you did not do this and the gas temperature was too high when you measured the volume of water displaced in the reaction, would the molar volume calculated be too high or too low? Explain why.

Answer 1

Measuring the gas volume at a higher temperature without allowing equilibration would result in a molar volume.

Step-by-step explanation:

If the gas temperature was too high when measuring the volume of water displaced in the reaction, the calculated molar volume would be too high. According to Charles's Law, which is part of the ideal gas law, the volume of a gas is directly proportional to its temperature (when pressure and the number of moles of gas are held constant).

Therefore, if the gas is warmer, it will occupy a greater volume than it would at a cooler temperature. Once the gas cools to the equilibrium temperature, the volume decreases. This means that measuring the volume of gas at a higher temperature would result in a larger volume being calculated than the actual molar volume at equilibrium or standard conditions.