Solutions

According to saturation curves shown in the figure, which of the following solutions is supersaturated?

• 40 g of NaCH3COO in 100 g of water at 40°C

• 140 g of NaCH3COO in 100 g of water at 80°C

• 80 g of NaCH3COO in 100 g of water at 40°C

• 80 g of NaCH3COO in 200 g of water at 40°C

A dissolved solute that does not form ions is

(usually a covalent compound)

• a nonelectrolyte.

• a weak electrolyte.

• a strong electrolyte.

• insoluble.

A solution that contains a large concentration of solute but can hold even more solute is

• unsaturated and dilute.

• saturated and dilute.

• unsaturated and concentrated.

• saturated and concentrated.

It is the medium in which matter is dissolved is the

• Solubility

• Solution

• Solvent

• Solute

When no more sugar will dissolve in a glass of water, the solution is...

• unsaturated
• saturated
• supersaturated

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

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

In salt water, _____ is the solute.

What is the formula of boiling point elevation?

• ΔT_b=K_b x m x i

• ΔT_c=K^b x m x e 

• Δt_b= K_b x m x i

• ΔT_b= K^b x M x i

Molality is

• the moles of solute in 1g of solvent

• the moles of solute in 1g of solution

• the moles of solute in 1kg of solvent

• the moles of solute in 1kg of solution