Acids and Bases Practice Test

On the pH scale,______

• A. A neutral solution has a value of 14
• B. Lower values indicate greater acidity
• C. Higher values indicate greater acidity
• D. All of the above
• E. None of the above

What formula do you use to calculate pH?

• 1.0 x 10^-7 / [H⁺]

• 14-[H⁺]

• 10 x [H⁺]

• -log[H⁺]

Adding acetic acid, a weak acid, to pure water causes the concentration of hydrogen ions to increase to 1.0 x 10^-4. What is the pH of this solution?

• 4

• 7

• -4

• 14

What is the pH of a solution with [H⁺] of 1.0 x 10^-8?

What is the pH of a solution with [H⁺] of 1.0 x 10^-8?

Because the pH scale is logarithmic, each numerical change represents a 10^X change in ion concentration, how many times more acidic is a pH of 3 compared to a pH of 5?

• 10

• 100

• 1000

• 10000

Because the pH scale is logarithmic, each numerical change represents a 10^X change in ion concentration, how many times more acidic is a pH of 8 and a pH of 12?

• 10

• 100

• 1000

• 10000

According to Bronsted-Lowry, what does an acid do?

• It donates a proton (H⁺).

• It accepts a proton (H⁺)

• It produces H⁺ in water.

• It produces OH^- in water.

Answer explanation

A Bronsted-Lowry acid donates a proton.

Tags

HS-PS1-B

According to Bronsted-Lowry, what does a base do?

• It donates a proton (H⁺).

• It accepts a proton (H⁺)

• It produces H⁺ in water.

• It produces OH^- in water.

Answer explanation

A Bronsted-Lowry base accepts a proton.

Tags

HS-PS1-B

Which type of ion does an acid produce when it is dissolved in water?

• oxide

• oxygen

• hydronium

• hydroxide