Chem 121L Exp 5 Pre Lab

What is a metathesis reaction?

An aqueous chemical reaction in which the cations and anions of the reactants change partners.

In order for a metathesis rxn to occur, one of the products formed must be a ?

Precipitate, gas, or weak or non electrolyte.

A metathesis reaction is a type of aqueous reaction, meaning at least one of the reactants must be in a ***** solution.

Aqueous

If both reactants are aqueous solutions, that means both reactants are likely

Strong electrolytes and ions are present in the solution.

What are spectator ions?

Ions that do not change chemically in a reaction.

Name the driving forces for a metathesis reaction.

1. The formation of a precipitate

2. The formation of a weak or non-electrolyte

3. The formation of a gas

What is the most common non-electrolyte formed as a product in a metathesis reaction?

Water

All neutralization reactions, i.e., reactions of acids with bases, form what as one of the products even if there’s no visual indication?

Water

Some weak acids and bases have a ****

Odor

What is the proper procedure for smelling the test tubes?

Wafting the air above the test tube toward your nose with your hand.

Strong electrolytes are

1. Soluble ionic solids

2. Strong acids

3. Strong bases

Weak electrolytes are

1. Weak acids

2. Weak bases

Non-electrolytes are

1. Molecular compounds

Test tubes don’t have to be dry, but if wet test tubes are used, what should you do?

Rinse them with deionized water and shake out the excess water.