IIT/JEE Chemistry Practice #10: Gas Stoichiometry

The video tutorial covers gas stoichiometry, focusing on ideal gases and their properties at standard temperature and pressure (STP). It begins with an introduction to stoichiometry and ideal gases, followed by a detailed analysis of stoichiometric options involving HCL and H2. The tutorial then explains the reduction of boron trichloride by hydrogen, including the formulation and balancing of the chemical equation. Finally, it demonstrates stoichiometric calculations to determine the volume of hydrogen needed to produce a specific mass of boron.

What is the primary focus of gas stoichiometry problems?

• Calculating the density of solids

• Understanding the behavior of ideal gases

• Balancing chemical equations

• Understanding the properties of liquids

At standard temperature and pressure, how much volume does one mole of an ideal gas occupy?

• 11.2 liters

• 22.4 liters

• 33.6 liters

• 44.8 liters

Why can't the rule of 22.4 liters per mole be applied to HCl in stoichiometric calculations?

• HCl is not a gas at STP

• HCl is an aqueous species

• HCl is a solid at STP

• HCl is an ideal gas

What is the correct stoichiometric ratio of HCl to H2 in the given reaction?

• 6:3

• 1:1

• 2:3

• 3:2

Which option correctly describes the volume of hydrogen produced per mole of aluminum at STP?

• 11.2 liters

• 22.4 liters

• 67.2 liters

• 33.6 liters

What is the balanced chemical equation for the reduction of boron trichloride by hydrogen?

• BCl3 + H2 → B + HCl

• 2BCl3 + 3H2 → 2B + 6HCl

• 2BCl3 + H2 → B + 2HCl

• BCl3 + 3H2 → 2B + 3HCl

How many liters of hydrogen are needed to produce 21.6 grams of boron at STP?

• 67.2 liters

• 22.4 liters

• 33.6 liters

• 44.8 liters