Solutions Quiz

What is the molarity of 2 moles of NaCl in 8 L of solution?

• 16 M
• 0.25 M
• 4 M
• 2 M

Molality is measured in

• mols per L
• mols per kg
• mols per kJ
• mols per mL

What is the molality of 1 mole of sugar dissolved in 4 kilograms of solution?

• 4 M
• 4 m
• 0.25 M
• 0.25 m

What mass of NaCl is needed to make a 1.5 m solution using 300 g of solvent?

• 26.3 g NaCl
• 11.7 g NaCl
• 1.50 g NaCl
• 0.0877 g NaCl

What is the freezing point of an antifreeze solution created by adding 651 g of ethylene glycol (CH₂(OH)CH₂(OH)) to 2505 g of water? K_f = 1.86 ^oC/m

• -4.19 ^oC
• 2.2 ^oC
• 0 ^oC
• -7.79 ^oC

Tags

NGSS.HS-PS3-4

Colligative properties depend on the _____ of solute particles in solution.

• type
• number
• pH
• nature

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

Tags

NGSS.HS-PS1-5

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

• supersaturated
• unsaturated
• saturated

A solution of potassium chlorate, KClO₃, has 20 grams of the salt dissolved in 100 grams of water at 70 ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?

• 10 grams
• 30 grams
• 80 grams
• 60 grams 

This substance is considered a polar substance

• water
• oil
• butter
• gasoline

Tags

NGSS.HS-ESS2-5