Question

1. When an open-end manometer is attached to a tank of gas in which the pressure is 1.030 atm which of the following will be observed if the barometric pressure is 0.980 atm? (Conversion factor: 1 atm = 760 torr)

a.The mercury level in the open arm of an open-end manometer will be 19 mm above a reference point.

b.The mercury level in the open arm of an open-end manometer will be 38 mm above a reference point.

c.The mercury level in the arm connected to a tank of gas will be 19 mm above a reference point.

d.The mercury level in the open arm of an open-end manometer will be 38 mm below a reference point.

e.The mercury level in the arm connected to a tank of gas will be 38 mm below a reference point.

2. A 15.0 L bulb containing Ar at 5.0 atm and a 22.0 L bulb containing Kr at 7.0 atm are connected by a stopcock. What will be the partial pressure of Ar in the mixture when the stopcock is opened and gases are allowed to mix at a constant temperature?

a.4.9 atm b.2.0 atm c.5.0 atm d.3.0 atm e.0.41 atm

3. A gaseous mixture contains equal masses of CO2, CO, N2, and O2. If the total pressure of the mixture is 1.00 atm what can be said about partial pressures?

a.Partial pressures of all gases are equal to 0.25 atm.

b.Partial pressure of N2 is smaller than partial pressure of O2.

c.Partial pressure of O2 is greater than partial pressure of CO.

d.Partial pressure of CO is more than 0.25 atm

e.Partial pressure of CO2 is greater than 0.25 atm.