U12 Flashcard 1 (H)

Front

What is pH?

Back

pH is a measure of the acidity or basicity of a solution, on a scale from 0 to 14, where 7 is neutral.

Front

What does a low pH indicate?

Back

A low pH (below 7) indicates that a solution is acidic.

Front

What does a high pH indicate?

Back

A high pH (above 7) indicates that a solution is basic.

Front

What is the pH of pure water?

Back

The pH of pure water is 7, which is considered neutral.

Front

How is pH calculated from [H+] concentration?

Back

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

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14, meaning if you know one, you can find the other.

Front

What is the pOH of a solution with a pH of 5.6?

Back

The pOH is 8.4.

Front

What is an acidic solution?

Back

An acidic solution has a higher concentration of hydrogen ions ([H+]) than hydroxide ions ([OH-]).

Front

What is a basic solution?

Back

A basic solution has a higher concentration of hydroxide ions ([OH-]) than hydrogen ions ([H+]).

Front

What is a neutral solution?

Back

A neutral solution has equal concentrations of hydrogen ions ([H+]) and hydroxide ions ([OH-]).