Home Chapter 14 Explorer Quizzes Explorer Quiz 2

# Explorer Quiz 2

This activity contains 12 questions.

## Calculate the solubility of oxygen gas in water at 20°C and a partial pressure of 1025 torr. The solubility of oxygen in water at 20°C and 760 torr is 0.176 g/100 mL water.

 0.237 g/100 mL 0.0119 g/100 mL 0.130 g/100 mL 0.383 g/100 mL

## Which of the following allows us to predict whether a particular solvent is likely to be polar?

 Solvents containing carbon atoms are usually polar. Solvents containing oxygen atoms are usually nonpolar. Solvents containing oxygen atoms are usually polar. All solvents are polar.

## Predict the polarity of acetone, C3H6O, and acetic acid, HC2H3O2.

 Both solvents are nonpolar. Both solvents are polar. Acetone is polar, and acetic acid is nonpolar. Acetone is nonpolar, and acetic acid is polar.

## How many grams of C12H22O11 will dissolve in 100 g of water at 50°C?

 91 g 98 g 130 g 44 g

## Predict the outcome of the following scenario. A person saturates hot coffee with sugar, then allows the coffee to cool to room temperature.

 The sugar will break down into two simpler compounds. Sugar will crystallize in the bottom of the cup. The sugar will remain dissolved. The sugar will polymerize.

## What is true of a saturated solution?

 The solution is supersaturated. If you add more solute to the solution, it will not dissolve. If you add more solute to the solution, it will dissolve. The solution is unstable and wants to become supersaturated.

## What mass of a 5.00% KI solution contains 1.75 g of solute?

 8.75 g 11.4 g 286 g 35.0 g

## Calculate the mass/mass percent concentration for 25.00 g of AgNO3 in 500.0 g of water.

 20.0% 4.762% 5.000% 4.76%

## Calculate the molar concentration for 10.00 g CaCl2 in 325 mL of solution.

 0.0308 M 0.277 M 2.77 x 10-4 M 30.8 M

## What is the mass of solute in 75.0 mL of 0.500 M HC2H3O2?

 2.25 g 3.75 g 0.0375 g 22.5 g

## What is the molarity of a potassium bromide solution that is prepared by diluting 250.0 mL of 0.500 M KBr to a total volume of 1.00 L?

 5.00 M 0.125 M 0.0125 M 0.500 M

## What volume of 0.100 M potassium bromide solution reacts completely with 37.5 mL of 0.200 M silver nitrate solution?KBr(aq) + AgNO3(aq) AgBr(s) + KNO3(aq)

 18.8 mL 50.0 mL 37.5 mL 75.0 mL