Acids and Bases Packet pg 38-40

The pH of a 0.1 M CH₃COOH solution is . . .

• less than 1

• greater than 1 but less than 7

• equal to 7

• greater than 7

In a solution, litmus paper is blue. The pH of the solution could be . . .

• 10

• 2

• 3

• 4

Which substance, if added to NH₄OH would cause the pH of the solution to increase?

• HCl

• NH₄Cl

• LiOH

• CH₃OH

Acidic solutions are those that contain an excess of . . .

• H₂ molecules

• H₂O molecules

• H⁺¹ ions

• OH^-1

The table shown (see pg 38 in Acids + Bases packet) was compiled from experimental laboratory data. At what pH would all 3 indicators appear yellow?

• 1.9

• 2.9

• 4.7

• 8.7

Which pH value indicates the most basic solution?

• 7

• 8

• 3

• 11

If an aqueous solution turns blue litmus red, which relationship exists between [H₃O⁺] and [OH^-1]?

• [H₃O⁺] > [OH^-1]

• [H₃O⁺] < [OH^-1]

• [H₃O⁺] = [OH^-1]

Water containing phenolphthalein will change from colorless to pink with the addition of . . .

• HOH

• HCl

• KOH

• KCl

A solution with a pH of 11 is tested with phenolphthalein and then with litmus. What is the color of each indicator in this solution?

• Pheno is colorless, litmus is blue

• Pheno is colorless, litmus is red

• Pheno is pink, litmus is blue

• Pheno is pink, litmus is red

A student was given 4 unknown solutions. Each solution was checked for conductivity and tested with pheno. The results are shown in the table on pg 39 of Acids + Bases Packet. Which solution could be NaOH?

• A

• B

• C

• D