What are the products of the reaction between zinc and hydrochloric acid?
Zinc chloride and hydrogen
Zinc hydrochloride and water
Zinc chloride and water
Which type of salt is made from sulfuric acid?
Sulfate
Sulfide
Sulfite
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
Evaporation/crystallisation
How do you separate an excess insoluble reactant from a solution?
Precipitation
Evaporation
In the preparation of a salt, why is the saturated solution of the salt left in a warm, dry place for a few days rather than heated over a water bath?
To speed up the evaporation of the water
To allow large crystals to form
To remove impurities
When performing an acid-alkali titration, what piece of apparatus is used to place a fixed volume of the first solution into the conical flask?
Pipette
Burette
Beaker
Which of these substances is a base?
Copper(II) oxide
Magnesium chloride
Sulfur dioxide
How would you complete the following word equation?
zinc carbonate + nitric acid →
zinc nitrate + hydrogen
zinc nitrate + water
zinc nitrate + water + carbon dioxide
Why is it important to add copper(II) oxide to sulfuric acid until it is in excess when making copper(II) sulfate?
If too little is added, the product would be copper(II) sulfite
Adding excess copper(II) oxide makes the reaction faster
Adding excess copper(II) oxide makes sure the all acid has reacted
What is the name of the base X?
Copper
Copper(II) hydroxide