Practice Questions 4

Question 1

Which exponential notation indicates the highest concentration?
1 x 10(-3)
1 x 10(-7)
1 x 10(-10)
1 x 10(-13)

Answer 1

1 x 10(-3)

Question 2

Which best describes an Arrhenius acid
Amphiprotic
Proton donor
Proton recipient
Forms H+ in solution

Answer 2

Forms H+ in solution

Question 3

Which of the following would you expect to be soluble in water?
Nitrogen gas
Carbon tetrachloride
Sodium sulfate
Butane, C4H10

Answer 3

Butane, C4H10

Question 4

What is the concentration in percent of each solution
14.2 g of potassium chloride dissolved in 450mL of solution

Answer 4

3.16%

Question 5

What is the concentration in percent of each solution
18.5 g of sodium chloride in 91.5 g of water

Answer 5

16.8%

Question 6

What is the concentration in percent of each solution
150 mL of alcohol in 350mL of water

Answer 6

30%

Question 7

What volume of pure ethanol is needed to make 800mL of a solution of ethanol in water that is 12% (v/c)?

Answer 7

96 mL

Question 8

47.9 g of potassium chlorate, KClO3, is used to make a solution with a concentration of 0.650 mol/L. What is the volume of the solution?

Answer 8

0.60 L

Question 9

What is the pH if a sodium hydroxide solution containing [OH-] = 1.5 x 10(-7)

Answer 9

7.2