chemistry unit 9

What are the properties of acids?

Taste sour, react with metals, turn blue litmus paper red, and have a pH of less than 7.

What do acids produce in water?

Acids produce H+ ions in water.

What is the pH range for strong acids?

The pH range for strong acids is 0-3.

Give an example of a weak acid and its pH.

Milk, with a pH of 6.5.

What are the properties of bases?

Taste bitter, slippery to the touch, turn red litmus paper blue, and have a pH greater than 7.

What do bases produce in water?

Bases produce OH- (hydroxide) ions in water.

What is the pH range for strong bases?

The pH range for strong bases is 13-14.

Give an example of a base and its pH.

Soap, with a pH of 9.

What is considered neutral pH?

Neutral pH is when H2O separates into equal concentrations of H+ and OH-.

How do chemists express the pH of a solution?

Chemists use logarithms to express pH.

What is the pH scale range?

The pH scale ranges from 0 to 14.

What does each unit change on the pH scale represent?

Each unit change on the pH scale represents a tenfold change in acidity or basicity.

What is the relationship between pH and pOH?

pH + pOH = 14.

How do you calculate [H+] from pH?

[H+] = 10^-pH.

What is the mathematical relationship between [H+] and [OH-] in water?

[H+] x [OH-] = 1 x 10^-14.