Molarity and Dilutions

Front

What is Molarity?

Back

Molarity (M) is a measure of concentration 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 is the volume of a solution with 10.0 M and 2.00 moles of NaOH?

Back

0.200 L

Front

What does it mean for a substance to be soluble in water?

Back

A substance is soluble in water if it can dissolve in water to form a homogeneous solution.

Front

Is (NH4)Cl soluble in water?

Back

Yes

Front

How do you calculate the number of moles from Molarity?

Back

Moles = Molarity (M) x Volume (L).

Front

What is the formula for dilution?

Back

C1V1 = C2V2, where C1 and V1 are the initial concentration and volume, and C2 and V2 are the final concentration and volume.

Front

If you dilute 125.0 mL of 2.00 M calcium hydroxide to 1.50 M, what is the new volume?

Back

167 mL

Front

What is the Molarity of a solution containing 0.68 mol of NaCl in 0.50 L of water?

Back

1.36 M

Front

Is Na2S soluble in water?

Back

Yes