Exit Ticket: Molarity and Dilutions

Front

What is molarity?

Back

Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution.

Front

How do you calculate molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What happens to the concentration of a solution when it is diluted?

Back

The concentration of the solution decreases (becomes lower).

Front

If you have a 6.00 M solution and dilute it to a larger volume, what will happen to the molarity?

Back

The molarity will decrease.

Front

What is the formula for dilution?

Back

M1V1 = M2V2, where M1 and V1 are the molarity and volume of the initial solution, and M2 and V2 are the molarity and volume of the diluted solution.

Front

Calculate the final volume when diluting a solution from 0.510 moles in 250 mL to 0.300 M.

Back

Final volume = 1.70 L.

Front

What is the new molarity when diluting 50.0 mL of a 6.00 M solution to 300 mL?

Back

New molarity = 1.0 M.

Front

How do you find the number of moles in a solution?

Back

Number of moles = Molarity (M) x Volume (L).

Front

Calculate the molarity of a solution containing 5.0 moles of solute in 2.0 liters of solution.

Back

Molarity = 2.5 M.

Front

What is the effect of dilution on the number of moles of solute?

Back

The number of moles of solute remains the same during dilution.