Exam Review

Front

What is the name for PO3^3-?

Back

Phosphite ion

Front

If you add 450 mL of distilled water to 50 mL of a solution that is 2.0 M, what is the new concentration?

Back

0.2 M

Front

The fact that we must have equal mass on both sides of an equation is the law of __________.

Back

conservation of mass

Front

What is the [OH-] if [H3O+] = 2.5 x 10^{-4}?

Back

4.0 x 10^{-11} M

Front

When ammonia is added to water, does the water act as an acid?

Back

True

Front

Define the term 'concentration' in chemistry.

Back

Concentration is the amount of solute present in a given volume of solution.

Front

What is the formula for calculating molarity (M)?

Back

M = \frac{moles\ of\ solute}{liters\ of\ solution}.

Front

What is the pH of a neutral solution at 25°C?

Back

7.0

Front

What is the relationship between pH and [H3O+]?

Back

pH = -log[H3O+]

Front

What is the formula for the dissociation of water?

Back

H2O ⇌ H+ + OH-