Chapter 15 Chemistry test
How many liters of a .500 M solution is needed to make .100 L of a .100 M solution?
0.0200 L
What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?
0.0253 M
How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?
0.23 mol
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.
0.34 (degree)°C
What is the molarity of a solution that contains 125 g NaCl in 4.00 L solution?
0.535 M
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?
117 g
23.0 g of NaCl is dissolved in 123 g of water. What is the mass percent composition of salt?
15.8 %
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?
182 g
Excess NaCl is added to 2.00 L of a 1.00 M solution of AgNO3. NaCl (aq) + AgNO3 (s) --> AgCl (s) + NaNO3 (aq)
2.00 mol
The freezing point of an aqueous solution that contains a nonelectrolyte is -8.0ºC. What is the molal concentration of the solution?
4.3 m
What mass of water must be used to make a 1.35 m solution that contains 8.20 mol of NaOH?
6.07 kg
Why is freezing-point depression a colligative property?
It is directly proportional to the molal concentration of a solution.
A metal solution is a(n)
alloy
Which of the following is an example of a nonpolar solvent?
carbon tetrachloride
Nonvolatile solutes
depress freezing point and elevate boiling point.
In the expression like dissolves like, the word like refers to similarity in molecular
polarity
Which of the following is soluble in water?
potassium nitrate
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
supersaturated
Colligative properties depend on
the concentration of the solute particles
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
the mass in grams of salt X and the total volume of each solution
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
unsaturated
Which of the following is an example of a polar solvent?
water