Chem Final

The pH scale in general uses ranges from ____?

• 0 to 1

• 1 to 1

• 0 to 7

• 0 to 14

During an acid-base titration, a very rapid change in pH occurs ___?

• when the first addition of known solution is made

• when roughly equivalent amounts of H₃O⁺ and OH^- become present

• at several points

• at no point

A water solution is neutral if ____?

• it contains no H₃O⁺ ions

• it contains no ionized water molecules

• it contains no H₃O⁺ or OH^- ions

• the concentrations of H₃O⁺ and OH^- are equal

Universal indicators ___?

• are mixtures of several indicator solutions

• are pure substances

• have very brief color-change intervals

• work well only for acidic solutions

An acid-base titration determines the solution volumes that are _____?

• chemically equivalent

• of equal molarity

• of equal mass

• of equal molality

Acid or Base?

pH = 4.0

Acid or Base?

[H₃O⁺] = 1 x 10^-2

Acid or Base?

[OH^-] = 1 x 10^-8

Convert the following

5.6 Cal to cal

Convert the following.

8.03 x 10²¹ joules to calories.