Acids and Bases

Front

What is an acid?

Back

An acid is a substance that donates hydrogen ions (H⁺) in a solution, resulting in a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts hydrogen ions (H⁺) or donates hydroxide ions (OH⁻) in a solution, resulting in a pH greater than 7.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (strongly acidic) to 14 (strongly basic), with 7 being neutral.

Front

What is neutralization?

Back

Neutralization is a chemical reaction between an acid and a base that produces water and a salt, typically resulting in a solution with a pH close to 7.

Front

What is the role of indicators in acid-base reactions?

Back

Indicators are substances that change color at specific pH levels, helping to determine the acidity or basicity of a solution.

Front

What is Bromothymol Blue used for?

Back

Bromothymol Blue is an acid-base indicator that changes color at pH 7, making it useful for detecting neutralization.

Front

What is the chemical formula for phosphoric acid?

Back

The chemical formula for phosphoric acid is H₃PO₄.

Front

What is the significance of HNO₂?

Back

HNO₂ is known as nitrous acid, which is a weak acid used in various chemical reactions.

Front

What is potassium hydroxide (KOH)?

Back

Potassium hydroxide is a strong base that dissociates in water to produce potassium ions (K⁺) and hydroxide ions (OH⁻).

Front

What does a strong acid do in water?

Back

A strong acid completely dissociates into its ions in water, resulting in a high concentration of hydrogen ions (H⁺).