Define molarity.
Molarity is the number of moles of solute per liter of solution.
What is the unit of molarity?
The unit of molarity is moles per liter (mol/L).
Fill in the blank: Molarity is calculated as _______ divided by volume in liters.
moles of solute
True or false: Molarity changes with temperature.
TRUE
As temperature affects volume, molarity can vary with temperature changes.
What does a 1 M solution mean?
It means there is 1 mole of solute in 1 liter of solution.
Define dilution in terms of molarity.
Dilution is the process of reducing the concentration of a solute in a solution.
What happens to molarity when you dilute a solution?
Molarity decreases when a solution is diluted.
Fill in the blank: The formula for dilution is M1V1 = _______.
M2V2
What is the molar mass?
Molar mass is the mass of one mole of a substance, expressed in grams per mole.
True or false: Molarity is temperature-dependent.
TRUE
Changes in temperature can alter the volume of the solution.
How do you prepare a 1 M solution of NaCl?
Dissolve 58.44 grams of NaCl in enough water to make 1 liter of solution.
Define concentration.
Concentration is the amount of solute in a given volume of solvent or solution.
What is the relationship between molarity and concentration?
Molarity is a specific measure of concentration based on moles of solute.
Fill in the blank: Concentration can be expressed in molarity, mass percent, or _______.
volume percent
What is the molarity of a solution with 2 moles of solute in 0.5 L?
The molarity is 4 M.
True or false: Molarity can be used for gases.
FALSE
Molarity is primarily used for solutions, not gases.
What is the molarity of a 0.5 L solution containing 0.25 moles of solute?
The molarity is 0.5 M.
Define stock solution.
A stock solution is a concentrated solution used to prepare diluted solutions.
Fill in the blank: To find moles, multiply molarity by _______.
volume in liters
What is the molarity of a solution with 3 moles in 2 L?
The molarity is 1.5 M.
True or false: Molarity is affected by the amount of solute only.
FALSE
Molarity is affected by both the amount of solute and the volume of solution.
What is the molarity of a solution if 0.1 moles are dissolved in 0.2 L?
The molarity is 0.5 M.
Define solution.
A solution is a homogeneous mixture of two or more substances.
What is the solvent in a solution?
The solvent is the substance that dissolves the solute, usually present in greater amount.
