Electrolytes and Reactions in aqueous solutions_Ch.4

Front

What is molarity?

Back

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution.

Front

How do you calculate molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the molarity of a solution prepared by dissolving 58.5 g of NaCl in enough water to make 1 L of solution?

Back

1 M (since the molar mass of NaCl is 58.5 g/mol).

Front

What is a weak electrolyte?

Back

A weak electrolyte is a substance that partially dissociates into ions in solution.

Front

Why is acetic acid considered a weak electrolyte?

Back

Acetic acid partially dissociates in water.

Front

What is a nonelectrolyte?

Back

A nonelectrolyte is a substance that does not dissociate into ions in solution.

Front

Which of the following is a nonelectrolyte: Hydrochloric acid, Sodium hydroxide, Ethanol, Potassium nitrate?

Back

Ethanol.

Front

What is a net ionic equation?

Back

A net ionic equation shows only the species that participate in a reaction, omitting spectator ions.

Front

Determine the net ionic equation for the reaction between BaCl2(aq) and Na2SO4(aq).

Back

Front

What is the activity series of metals?

Back

The activity series is a list of metals ranked by their ability to displace other metals from compounds.