U11 Flashcard 2

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 = moles of solute / liters of solution.

Front

What is the molarity of 2.5 mol of NaOH dissolved in 12.0 L of solution?

Back

0.21 M

Front

Which solution is more concentrated: 100 g of salt in 500 mL of water or 90 g of salt in 500 mL of water?

Back

100 g of salt in 500 mL of water (Solution 1) is more concentrated.

Front

What happens to the concentration when a solution is diluted?

Back

The concentration decreases when a solution is diluted.

Front

If you dilute 250 mL of 0.10 M lithium acetate to 750 mL, what is the new concentration?

Back

0.033 M

Front

What factors affect the solubility of gases in water?

Back

Temperature, pressure, and the nature of the gas affect solubility.

Front

How does increasing temperature affect the solubility of gases in water?

Back

Increasing temperature decreases the solubility of gases in water.

Front

What is the formula for dilution?

Back

C1V1 = C2V2, where C is concentration and V is volume.

Front

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to 250.0 mL?

Back

0.636 M