Ap Chem Ch 6 Gas Laws - Molar Volume

Ap Chem Ch 6 Gas Law - Molar Volume and Partial Pressure

By Connie Schaef

Open Ended

​Use the molar volume of a gas at STP to determine the volume (in L) occupied by 33.5 g of neon at STP.

Open Ended

What is the density (in g/L) of hydrogen gas at 20.0 ^oC and pressure of 1655 psi?

Open Ended

Consider the chemical reaction:

C(s) + H₂O (g) --> CO(g) + H₂(g)

How many liters of hydrogen gas are formed from the complete reaction

of 15.7 g C? Assume that the hydrogen gas is collected at pressure of 1.0 atm and a temperture of 355 K.

Open Ended

A 248 mL gas sample has a mass 0.433 g at a pressure of 745 mm Hf and a temperature of 28 ^oC. What is the molar mass of the gas?

Open Ended

A sample of gas has a mass of 38.8 mg. Its volume is 224 mL at a temperature of 55^o C and a pressure of 886 torr. Find the molar mass of the gas.

Open Ended

Automobile air bags inflate following a serious impact. The impact triggers the chemical reaction:

2NaN₃ (s) --> 2Na (s) + 3N₂ (g)

If the automobile airbag has a volume of 11.8 L, what mass of NaN₃ (in g) is requrired to fully inflate the airbag upon impact. Assume STP conditions.

Open Ended

A gas mixture contains each of the following gases t the idicated partial pressures: N₂, 215 torr; O₂, 102 torr; He, 117 torr. What is the total pressure of the mixture? What mass of each gas is present in a 1.35 L sample of this mixture at 25.0^o C?

Open Ended

A 1.20 g sample of dry ice is added to a 755 mL lask cotaiin nitrogen gas at a tempeaure od 25.0 ^o C and a pressure of 725 mm Hg. The dry ice sublimes (converts from solid to gas), and the mixture returns to 25.0^o C. What is the total pressure in the flask:?

Open Ended

A gas mixture cotains 1.25 g N₂ and 0.85 g O₂ in a 1.55 L container at 18^o C. Calculate the mole fraction and partial pressure of component in the gas mixture?

Open Ended

The zinc in a copper-plated penny will dissolve in hydrochloric acitd if the copper coating is filed down in several sports (so the thte hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is 2H⁺ (aq) + Zn (s) --> H₂(g) + Zn²⁺(aq). When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25^o C is 0.951 L at total pressure of 748 mmHg. What mass of hydrogen gas is collected?