pH and Arrhenius Acids and Bases Quiz

Calculate the pH of a solution with an H+ concentration of 1.0 x 10^-3 M.

• 5.0

• 10.0

• 7.0

• 3.0

What is the pH of a solution with an H+ concentration of 5.0 x 10^-9 M?

• 9.1

• 3.2

• 6.7

• 8.3

If the H+ concentration of a solution is 2.5 x 10^-5 M, what is the pH?

• 6.9

• 3.2

• 5.6

• 4.5

According to the Arrhenius definition, what is an acid?

• A substance that increases the concentration of hydroxide ions (OH-) in an aqueous solution

• A substance that increases the concentration of hydrogen ions (H+) in an aqueous solution

• A substance that decreases the concentration of hydrogen ions (H+) in an aqueous solution

• A substance that has no effect on the concentration of hydrogen ions (H+) in an aqueous solution

According to the Arrhenius definition, what is a base?

• A substance that produces oxygen ions (O2-) in aqueous solution

• A substance that produces hydroxide ions (OH-) in aqueous solution

• A substance that is neutral in aqueous solution

• A substance that produces hydrogen ions (H+) in aqueous solution

What ion is responsible for the basic properties of a solution according to the Arrhenius definition?

• hydroxide ion (OH-)

• chloride ion (Cl-)

• sodium ion (Na+)

• carbonate ion (CO3^2-)

What is the significance of the pH scale?

• It indicates the density of a substance.

• It measures the acidity or alkalinity of a substance.

• It measures the temperature of a substance.

• It determines the color of a substance.

Why is it important to maintain a balanced pH in the human body?

• To ensure proper bodily functions and prevent health issues.

• To cause health issues and disrupt bodily functions

• To maintain an unbalanced pH for better overall health

• To make the body more acidic and improve digestion

What happens in a neutralization reaction?

• Formation of carbon dioxide and a metal

• Release of oxygen and a base

• Production of hydrogen and an acid

• Formation of water and a salt

Give an example of a neutralization reaction.

• Acetic acid + Ammonia -> Ammonium acetate + Water

• Hydrochloric acid + Sodium hydroxide -> Sodium chloride + Water

• Nitric acid + Calcium hydroxide -> Calcium nitrate + Water

• Sulfuric acid + Potassium hydroxide -> Potassium sulfate + Water