Molarity, Molality, and Dilutions

What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)

• 0.8 M

• 1.5M

• 3.0M

• 6.0M

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

• lowering the temperature of the solvent

• stirring the solute in the solution

• increasing the pressure on the solution

• increasing the particle size of the solute

What is the molarity of a solution when 80.0 g of sodium chloride (NaCl) are dissolved in 500.0 ml of water

• 1.37M

• 1.45 M

• 2.74M

• 6.25M

Which solute does not increase in solubility as temperature rises?

• NH₃
• NaNO₃
• KNO₃
• NaCl

Tags

NGSS.HS-PS3-4

How many grams of SO₂ can dissolve at 50 ⁰C?

• 5 g
• 10 g
• 20 g
• 39 g

Tags

NGSS.HS-PS3-4

What is the minimum temperature needed to dissolve at least 10 g of KClO₃?

• 25 ⁰C
• 10 ⁰C
• 5 ⁰C
• 100 ⁰C

How many grams of sodium nitrate, NaNO₃, are soluble in 100 g of water at 10 ºC?

• 80 grams
• 100 grams
• 40 grams
• 10 grams

When 50 grams of potassium chloride, KCl, is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated
• unsaturated
• saturated

When 30 grams of potassium nitrate, KNO₃, is dissolved in 100 grams of water at 20 ºC, the solution can be correctly described as:

• saturated
• unsaturated
• supersaturated

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

• 3
• 1
• 6
• 9

Tags

NGSS.HS-PS1-5