MID TEST REMEDIAL (SCORED 50 - 57)

What type of reaction produced an insoluble salt?

• Neutralisation reaction

• Precipitation reaction

• Titration reaction

• Insoluble reaction

When a soluble salt is formed from an acid and an insoluble base, how do you know when an excess of a base has been added?

• When bubbles of gas appear

• When the reactant all dissolves

• When some of the reactant is left unreacted/undissolved

• When a colour change happens

Why do you add excess of the insoluble reactant when making a soluble salt?

• To make sure all the acid is used up

• To separate the solid from the solution

• To make sure a reaction occurs

• To have the reaction happen faster

How do you separate an excess insoluble reactant from a solution?

• Filtration

• Precipitation

• Crystalisation

• Evaporation

When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solution?

• Filtration

• Neutralisation

• Condensation

• Evaporation/crystallisation

What is the purpose of a titration when making pure salts?

• To test if reactants react.

• To determine the exact quantities needed for neutralisation

• To calculate the concentration of the salt

• To test quality of reactants.

Complete the following word equation:

Metal + Acid -->

• Salt + water

• Salt + hydrogen

• Salt + Water + Carbon dioxide

Salts that are made with hydrochloric acid are called ______________.

• chlorides
• sulfates
• nitrates
• carbonates

Salts that are made with nitric acid are called ______________.

• chlorides
• sulfates
• nitrates
• carbonates

What salt is produced if you react sodium hydroxide with hydrochloric acid?

• sodium hydroxide
• sodium sulfate
• sodium nitrate
• sodium chloride