Question

1- A gas sample has a pressure of 1.17 bar. What is this pressure in atm?

Hint: 1 atm = 101.3 kPa = 1.013 bar = 760 torr = 760 mm Hg = 14.7 psi

2-

A sample of gas has a volume of 474 mL at a pressure of 3.49 atm. The gas is compressed and now has a pressure of 7.72 atm. Predict if the new volume is greater or less than the initial volume, and calculate the new volume. Assume temperature is constant and no gas escaped from the container.

New volume larger or smaller? _________

New volume = mL

3- A sample of gas has a volume of 2.64 L at a temperature of 40.70 °C. The gas sample is cooled to a temperature of -4.37 °C (assume pressure and amount of gas are held constant). Predict whether the new volume is greater or less than the original volume, and calculate the new volume.

New volume larger or smaller? _________

New volume = L

4- A sample of gas contains 0.150 mol of C₂H₄(g) and 0.150 mol of H₂O₂(g) and occupies a volume of 12.0 L. The following reaction takes place:

C₂H₄(g) + H₂O₂(g) = CH₂OHCH₂OH(g)

Calculate the volume of the sample after the reaction takes place (assume temperature and pressure are constant).

L

Answer 1