Stoichiometry Review Pd. 1

Carbon tetrachloride is a solvent which is used as a refrigerant and also as a cleaning agent. Today, methane and chlorine are mainly used to produce carbon tetrachloride:

CH₄ + 4Cl₂ → CCl₄ + 4HCl

How many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (Cl₂) with excess methane?

• 3.845 g

• 61.53 g

• 384.5 g

• 6153 g

Tags

NGSS.HS-PS1-7

In the reaction A + B → C + D, if element B is in excess, then —

• A is the limiting reactant

• B is the limiting reactant

• C is the limiting reactant

• Both A and B are limiting reactants

In the reaction 2H₂ + O₂ → 2H₂O, how many moles of oxygen are required to fully react with 6.0 mol of hydrogen?

• 3.0 mol

• 6.0 mol

• 12.0 mol

• 18.0 mol

In the reaction 2RbNO₃ → 2RbNO₂ + O₂, how many moles of O₂ are produced when 5.0 mol of RbNO₃ decompose?

• 1.0 mol

• 2.5 mol

• 3.0 mol

• 7.5 mol

Tags

NGSS.HS-PS1-7

In the reaction N₂ + 3H₂ → 2NH₃, what is the mole ratio of hydrogen to nitrogen?

• 1 : 1

• 1 : 2

• 3 : 1

• 3 : 2

A student burns 1.50 mol C₃H₈ according to the following reaction:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

How many grams of carbon dioxide are produced?

• 44.0 g

• 66.1 g

• 132 g

• 198 g

Tags

NGSS.HS-PS1-7

2CO  +  O₂  −-> 2CO₂
How many liters of carbon dioxide are produced from 10L of carbon monoxide?

• 10
• 20
• 1
• 5

Tags

NGSS.HS-PS1-7

How many liters of NH₃ are needed to react completely with 30.0L of NO?

4NH₃(g) + 6NO (l)--> 5N₂ (g) + 6H₂O (l)

• 5.0 L

• 20.0 L

• 7.5 L

• 120.0 L

Tags

NGSS.HS-PS1-7

P₄ + 6Cl₂ --> 4PCl₃ 
The reaction of 75.0g P₄ with excess chlorine gas produces 110g PCl₃ in lab. Find the theoretical yield and calculate percent yield for the reaction. 

• 78%
• 64%
• 27%
• 33%

Tags

NGSS.HS-PS1-7

Using the reaction below, determine the percent yield of H₂ if you reacted 36.0 g of water with excess iron. The actual yield is 3.60 g H₂.
3Fe +  4H₂O → Fe₃O₄ + 4 H₂

• 112%
• 89.1%
• 49.9%
• 0.891%

Tags

NGSS.HS-PS1-7