WorksheetsSALTS
Total questions: 30
Worksheet time: 2hrs 30mins
Which of the following salts is prepared by precipitation method?
sodium chloride
barium sulphate
calcium nitrate
ammonium carbonate
How would you prepare a sample of potassium chloride safely in the laboratory?
Add excess potassium metal to dilute hydrochloric acid
Titrate dilute HCl with aqueous KOH with an indicator
Titrate dilute HCl with aqueous KOH once with indicator, then again without
Mix aqueous potassium nitrate with aqueous sodium chloride
Which of the following methods is used to prepare zinc sulphate?
Add excess zinc chloride to aqueous sodium sulphate
Tiltrate dilute H2SO4 with aqueous Zn(OH)2 with an indicator, then again without
Add excess solid zinc oxide to dilute sulphuric acid
Mix aqueous zinc nitrate with aqueous potassium sulphate
After titrating aqueous NaOH with dilute HCl without indicator, what is the next step to obtain a NaCl salt ?
Filtration
Evaporation to filtration
Repeat the titration
Evaporate until saturated, cool, filtration and dry the salt
After adding aqueous Ca(NO3)2 to Na2SO4, what is my next step to prepare a sample of CaSO4?
Crystallisation
Evaporation to dryness
Filtration to get the filtrate
Filtration to get the residue
Which of the following can be prepared by titration?
Magnesium sulfate
Zinc carbonate
Lead (II) sulfate
Ammonium chloride
Why is solid calcium oxide added in excess to dilute nitric acid when preparing calcium nitrate salt?
To ensure all calcium oxide is used up
To speed up the reaction
To ensure all dilute nitric acid is completely reacted
To have maximum yield of calcium nitrate
Which method of preparation of a pure salt solution requires the use of a pipette and burette?
BaCl2 + Na2SO4 --> BaSO4 + 2NaCl
CuO + HCl --> CuCl2 + H2O
NaOH + HCl --> NaCl + H2O
MgCO3 + H2SO4 --> MgSO4 + H2O + CO2
Which pair of reagents can be used to prepare copper(II) sulphate salt?
Copper metal with dilute sulphuric acid
Copper(II) nitrate with sodium sulphate
Copper(II) chloride and dilute sulphuric acid
Copper(II) carbonate with dilute sulphuric acid
Which two solutions, when mixed together, will form a precipitate?
dilute hydrochloric acid and barium nitrate
dilute sulfuric acid and sodium hydroxide
ammonium chloride and lead (II) nitrate
dilute nitric acid and zinc chloride
Which method is used to prepare lead (II) chloride?
Pb(NO3)2(aq) + NaCl (aq) --->
PbSO4(s)+ NaCl (aq) --->
PbCO3(s) + NaCl (aq) --->
Which of the following is insoluble salt?
barium sulphate
magnesium nitrate
silver nitrate
sodium carbonate
Zinc nitrate can be prepared by reacting nitric acid with excess solid. Which of the following solids cannot be used in the preparation of calcium nitrate?
Zinc
zinc sulphate
zinc oxide
zinc carbonate
Which of the following method is suitable to prepare iron(II) sulphate?
FeCl2 + H2SO4 --->
Fe(NO3)2 + H2SO4 --->
Fe + H2SO4 --->
Fe(OH)2 + H2SO4 --->
Which is the most suitable method for separating the products of the reaction below:
NaCl (aq) + AgNO3 (aq) --> AgCl (s) + NaNO3 (aq)
chromatography
crystallisation
distillation
filtration
Bryan wants to prepare potassium sulphate by reacting an acid with potassium hydroxide. Name the acid used in this experiment.
hydrochloric acid
nitric acid
sulphuric acid
In order to obtain a soluble salt from a solution, which of the following methods should be used
filtration
crystallization
distillation
fractional distillation
__________ are soluble.
All carbonates
All chlorides
All nitrates
All sulfates
Salt X soluble in water produced blue colour.
Possibly salt X contains....
Iron(lll) ion
Iron(ll) ion
Copper(ll) ion
Zinc ion
Salt Y soluble in water produce brown solution.
Possibly salt Y contains ...
Copper(ll) ion
Iron(ll) ion
Iron(lll) ion
Ammonium ion
Green solid salt A dissolved in water produce green colour solution.
Salt A could be
Copper(ll) carbonate
Iron(ll) nitrate
Copper(ll) chloride
When hot this substance in yellow colour. But when cold it turns to white colour. This is
Lead(ll) oxide
Zinc oxide
Iron(lll) oxide
Iron(ll) oxide
What gas is formed when ammonium chloride is warmed with aqueous sodium hydroxide?
Ammonia
Chlorine
Oxygen
Hydrogen
Which gas changes damp litmus paper from red to blue?
Ammonia
Carbon dioxide
Chlorine
Hydrogen
A salt is dissolved in water. The results of two separate tests on it are shown in the table.
- white precipitate which dissolved when excess aqueous ammonia is added.
-white precipitate is formed when dilute hydrochloric acid and aqueous barium chloride is added to the salt solution. What is the salt?
Aluminium chloride
Aluminium sulphate
Zinc chloride
Zinc sulphate
What does the gas collected tell us about the salt?
Type of cation
Type of anion
Reactivity with oxygen
Volatility
To add an excess of a reagent, means
to add the reagent until no further change is observed.
to add the reagent until it is colorless
to add the reagent until all is dissolved
to add the reagent until no more precipitate is formed
