Mini Test Review

Match the following conversion factors/equations

• Molar Mass

• M = mol/L

• 22.4 L

• PV=nRT

• Avogadro's Number

Use the ​ (a)   to convert from the ​ (b)   of one substance to the moles of a ​ (c)   substance.

• mole ratio
• moles
• different

The ​ (a)   can only be used with a ​ (b)   chemical ​ (c)  

• mole ratio
• balanced
• equation

Match the following

• The reactant that will be leftover

• Limiting Reactant

• The amount of product that is actually producted

• Actual Yield

• (Actual Yield/Theoretical Yield) * 100

• Theoretical Yield

• The amount of product that can be formed using the limiting reactant

• Percent Yield

• The reactant that runs out first

• Excess Reactant

Put the following steps in order to correctly solve this problem:

What mass of NaCl is formed from the reaction of 24.3g of Na with 57.2L of Cl₂ gas at STP? How much excess reactant reacts and how much is left over?

• Compare the two masses of NaCl. The reactant that gave them smallest amount of NaCl is your LR and the other is your ER.

• Determine the amount of excess reactant you need using the given amount of the limiting reactant.

• Convert 24.3g of Na to grams of NaCl using the molar mass of Na, mole ratio, and the molar mass of NaCl

• Convert 57.2L of Cl₂ using 22.4L, mole ratio, and the molar mass of NaCl.

• Subtract the amount of excess reactant from the given amount of excess reactant