buck ch 15

15.8 %

23.0 g of NaCl is dissolved in 123 g of water. What is the mass percent composition of salt?

alloy

A metal solution is a(n)

182 g

An oven-cleaning solution is 40.0% (by mass) NaOH. If one jar of this product contains 454 g of solution, how much NaOH does it contain?

the concentration of the solute particles

Colligative properties depend on

2.00 mole

Excess NaCl is added to 2.00 L of a 1.00 M solution of AgNO3. NaCl (aq) + AgNO3 (s) à AgCl (s) + NaNO3 (aq) How many moles of AgCl is produced?

0.0200 L

How many liters of a .500 M solution is needed to make .100 L of a .100 M solution?

0.23 mol

How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?

supersaturated

If the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in solution at that temperature, the solution is said to be

Unsaturated

If the amount of solute present in a solution at a given temperature is less than the maximum amount that can dissolve at that temperature, the solution is said to be

polarity

In the expression like dissolves like, the word like refers to similarity in molecular

117 g

The concentration of a water solution of NaCl is 2.48 m, and it contains 806 g of water. How much NaCl is in the solution?

4.3 m

The freezing point of an aqueous solution that contains a nonelectrolyte is -8.0ºC. What is the molal concentration of the solution?

0.34ºC

What is the boiling-point elevation of a solution made from 10.0 g of a nonelectrolyte solute and 300.0 g of water? The molar mass of the solute is 50.0 g and the molal boiling-point constant for water is 0.51ºC.

0.0253 M

What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

0.535 M

What is the molarity of a solution that contains 125 g NaCl in 4.00 L solution?

6.07 kg

What mass of water must be used to make a 1.35 m solution that contains 8.20 mol of NaOH?

carbon tetrachloride

Which of the following is an example of a nonpolar solvent?

water

Which of the following is an example of a polar solvent?

potassium nitrate

Which of the following is soluble in water?

It is directly proportional to the molal concentration of a solution

Why is freezing-point depression a colligative property?

the mass in grams of salt X and the total volume of each solution

You have two solutions of the same soluble salt X. In order to determine which has the highest concentration of X (molarity), you would need to know

Nonvolatile solutes

depress freezing point and elevate boiling point