WorksheetsSalt preparation 1
Total questions: 20
Worksheet time: 26mins
Which of the following salts is prepared by precipitation method?
sodium chloride
barium sulfate
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 sulfate?
Add excess zinc chloride to aqueous sodium sulfate
Tiltrate dilute H2SO4 with aqueous Zn(OH)2 with an indicator, then again without
Add excess solid zinc oxide to dilute sulfuric acid
Mix aqueous zinc nitrate with aqueous potassium sulfate
After titrating aqueous NaOH with dilute HCl without indicator, what is my next step to obtain a sample of NaCl ?
Filtration
Evaporation to dryness
Repeat the titration
Evaporate to saturation, then cool the solution
After adding aqueous Ca(NO3)2 to dilute H2SO4, 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 two solutions, when mixed together, will form a precipitate?
dilute hydrochloric acid and barium nitrate
dilute sulfuric acid and sodium hydroxide
dilute hydrochloric acid and lead (II) nitrate
dilute nitric acid and zinc chloride
How can I prepare a sample of copper(II) sulfate?
Add excess Cu metal to H2SO4
Add Cu(NO3)2 (aq) to Na2SO4(aq)
Add excess CuCO3 to H2SO4
Titrate Cu(OH)2 to NaOH
What is a Salt?
Food seasoning
When a hydrogen ion is replaced by a metal to form a compound
When a metal ion is replaced by a hydrogen ion to form a compound
None of the above
Sodium, Potassium and Ammonium salts are insoluble
TRUE
FALSE
Are all nitrates soluble?
YES
NO
Which method is used to prepare soluble salts from Group 1?
Electrolysis
Titration
Haber Process
Precipitation method
Neutralization reactions
formed from joining positive and negative ions
increases OH ions
froms a salt and water
increases H2O ions
All chlorides are soluble
TRUE
FALSE
There are 3 ways a metal can react with acid
True
False
_____ + HCl –> NaCl + H2O
Na
NaOH
NaO
NaCO3
What is the correctly written chemical formula for the ionic compound, strontium oxide?
[Hint: strontium, Sr is in Group 2]
Sr2O
SrO2
Sr2O2
SrO
Which of the following statements best define the term ‘salt’?
Salt is formed when metal reacts with an alkali.
Salt contains sodium ions and chloride ions.
Salt is formed from a weak Van der Waals’ forces of attraction.
Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions.
Which of the following preparation of salt is incorrect?
acid + alkali
acid + metal oxide
acid + carbonate
acid + acid
Which method is used to prepare silver chloride?
Add excess solid reactant to acid
Titration
Precipitation
