Gas Stoichiometry: Calculating Hydrogen Volume from Lithium and Water Reactions

Gas Stoichiometry: Calculating Hydrogen Volume from Lithium and Water Reactions

Assessment

Interactive Video

Chemistry

9th - 12th Grade

Hard

Created by

Mia Campbell

FREE Resource

The video tutorial explains gas stoichiometry, focusing on the ideal gas law (PV=NRT) and calculations at standard temperature and pressure (STP). It outlines three main steps: writing a balanced equation, calculating moles using mole ratios, and applying the ideal gas law to find volume or moles. An example problem involving lithium and hydrogen gas is solved, demonstrating calculations using both the ideal gas law and STP conditions. The tutorial concludes with a comparison of results and predictions based on gas laws.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molar volume of any ideal gas at STP?

22.4 liters

24.0 liters

20.0 liters

18.0 liters

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation is used to calculate the properties of an ideal gas?

PV = nRT

V = nRT/P

n = PV/RT

P = nRT/V

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving gas stoichiometry problems?

Writing the balanced chemical equation

Calculating the moles of reactants

Determining the temperature and pressure

Measuring the volume of gas produced

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molar mass of lithium used in the calculations?

6.941 grams per mole

7.500 grams per mole

5.392 grams per mole

8.934 grams per mole

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of hydrogen gas are produced from 9.29 grams of lithium?

0.8345 moles

1.334 moles

0.6692 moles

1.000 moles

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct conversion factor for moles of lithium to moles of hydrogen?

2 moles of Li for 2 moles of H2

2 moles of Li for 1 mole of H2

1 mole of Li for 1 mole of H2

1 mole of Li for 2 moles of H2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What temperature was used in the calculation of the volume of hydrogen gas?

298 Kelvin

310 Kelvin

273 Kelvin

300 Kelvin

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