Which salt would be formed by reacting cobalt carbonate and hydrochloric acid?
Cobalt sulfate
Cobalt chloride
Cobalt hydroxide
When a soluble salt is formed from an acid and an insoluble base, how do you know when an excess of base has been added?
When bubbles of gas appear
When the reactant all dissolves
When some of the reactant is left unreacted/undissolved
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
How do you separate an excess insoluble reactant from a solution?
Filtration
Precipitation
Evaporation
Which of these substances is most likely to be insoluble?
Sodium carbonate
Calcium nitrate
Calcium carbonate
Magnesium chloride solution and sodium carbonate solution are mixed together. What substance is precipitated?
Sodium chloride
Magnesium carbonate
Chlorine carbonate
Which two chemicals could you react to make only potassium chloride and water?
Potassium and hydrochloric acid
Potassium hydroxide and hydrochloric acid
Potassium oxide and sulfuric acid
When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solution?
Neutralisation
Evaporation/crystallisation
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
When processing titration results, what do you do with results that are very close together?
Calculate the average value
Ignore both values
Choose the highest value