pH Review

Front

What is pH?

Back

pH is a measure of the hydrogen ion concentration in a solution, indicating how acidic or basic that solution is.

Front

What does a pH value of 7 indicate?

Back

A pH value of 7 indicates that a solution is neutral, meaning the concentration of hydrogen ions (H+) is equal to that of hydroxide ions (OH-).

Front

What happens to pH when hydrogen ions are added to a solution?

Back

When hydrogen ions are added to a solution, the pH decreases, making the solution more acidic.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

The pH scale is logarithmic; a decrease of 1 pH unit corresponds to a tenfold increase in hydrogen ion concentration.

Front

What is the pH range for acidic solutions?

Back

The pH range for acidic solutions is from 0 to less than 7.

Front

What is the pH range for basic solutions?

Back

The pH range for basic solutions is greater than 7 to 14.

Front

What is the significance of a pH of 14?

Back

A pH of 14 indicates a highly basic solution with a very low concentration of hydrogen ions.

Front

What is the effect of temperature on pH?

Back

Temperature can affect the ionization of water, thus influencing the pH of a solution.

Front

What is a buffer solution?

Back

A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added.

Front

How does soap affect pH?

Back

Soap is a weak base and can increase the pH of a solution, but it is weaker than stronger bases like bleach.