U11(H) Flashcard 2

Front

What is the effect of crushing a solute on its dissolving rate?

Back

Crushing the solute into smaller pieces increases the rate of dissolving because it increases the surface area available for interaction with the solvent.

Front

How does temperature affect the solubility of gases in liquids?

Back

Increasing the temperature decreases the solubility of gases in water because gases tend to escape from the liquid at higher temperatures.

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 the molarity of a diluted solution?

Back

Molarity (M) = (Molarity of concentrated solution) x (Volume of concentrated solution) / (Total volume of diluted solution).

Front

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

Back

0.636 M.

Front

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

Back

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

Front

What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?

Back

0.018 M.

Front

What happens to the solubility of solids in liquids when temperature increases?

Back

Generally, the solubility of solids in liquids increases with an increase in temperature.

Front

What is the relationship between surface area and the rate of dissolving?

Back

Increasing the surface area of a solute increases the rate of dissolving because more solute particles are exposed to the solvent.

Front

What is the formula to calculate the number of moles from grams?

Back

Number of moles = Mass (g) / Molar mass (g/mol).