Acids and Bases

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (strongly acidic) to 14 (strongly basic), with 7 being neutral.

Front

What does a pH value of 1 indicate?

Back

A pH value of 1 indicates a very strong acid.

Front

What does a pH value of 14 indicate?

Back

A pH value of 14 indicates a very strong base.

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

As pH decreases, hydrogen ion concentration increases, making the solution more acidic.

Front

What is the formula for calculating pH?

Back

pH = -log[H+], where [H+] is the concentration of hydrogen ions in moles per liter.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, meaning it is neither acidic nor basic.

Front

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

Back

Indicators are substances that change color in response to changes in pH, helping to identify whether a solution is acidic or basic.

Front

What is the difference between a strong acid and a weak acid?

Back

A strong acid completely dissociates in water, while a weak acid only partially dissociates.