Concentration of Solutions Practice Quiz (Mods 1-2 & 13-14)

Which equation is used to find molarity?

• Moles solute/L solution

• Moles solute/kg solution

• Moles solute/kg solvent

• Grams solute/L solution

Which equation is used to find molality?

• Moles solute/L solution

• Moles solute/kg solution

• Moles solute/kg solvent

• Grams solute/L solution

What is the molarity of a solution in which 10.0 g AgNO₃ is dissolved in 500. mL of solution?

• 101 M

• 0.118 M

• 270 mL

• 2.5 g

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

• 2.0 M

• 0.22 m

• 135 m

• 2.0m

What is the molality of a solution in which 15 g of I₂ is dissolved in 2.0 Kg of water?

• 1.5 M

• 1.5 m

• .030 m

• 0.059 m

Tags

NGSS.HS-PS1-5

How many moles of NaCl are present in 125 mL of a solution with a molarity of 8.59M?

• 1.07 gram

• 62.7 mol

• 1.07 mol

• 62.7 grams

What is the molality of 1.2 g of HCl in 750 g of solution?

• 0.04 m
• 0.00004 m
• 0.0016 m

Which solute decreases in solubility as temperature rises?

• NH₃

• NaNO₃

• KNO₃

• NaCl

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

• 5 g
• 10 g
• 20 g
• 39 g

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

• 25 ⁰C
• 10 ⁰C
• 5 ⁰C
• 100 ⁰C

Tags

NGSS.MS-PS1-4