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Making salts quick check on methods

Last updated 5 months ago
26 questions
1

What is your target grade?

1

What grade did you achieve in your mock

1

What grade would you expect to achieve on a test on making salts before tasking this formative??

5

Sodium chloride (NaCl)

____________ (All common sodium salts are soluble.)

Potassium nitrate (KNO₃)

____________ (All nitrates are soluble.)

Ammonium sulfate (NH₄)₂SO₄

____________ (All common ammonium salts are soluble.)

Silver chloride AgCl

______________ (Silver chloride is an exception to the rule that most common chlorides are soluble).

Lead sulfate PbSO₄

______________
Lead sulfate is an exception to the rule that most common sulfates are soluble.
Other Answer Choices:
Insoluble
Soluble
5

Calcium carbonate CaCO₃

______________ (Most common carbonates are insoluble.)

Calcium hydroxide Ca(OH)₂

______________ (Most common hydroxides are insoluble.)

Potassium carbonate K₂CO₃

____________ (Sodium carbonate, potassium carbonate, and ammonium carbonate are soluble).

Ammonium hydroxide NH₄OH

____________ (Sodium hydroxide, potassium hydroxide, and ammonium hydroxide are soluble).

Sodium sulfate Na₂SO₄

____________
All common sodium salts are soluble.
Other Answer Choices:
Insoluble
Soluble
6
Add the state symbols to the following formulae.
  • (_______ ) indicates aqueous (dissolved in water)
  • (______ ) indicates solid (precipitate)
1. Lead Sulfate (PbSO₄)
  • Reactants: Lead(II) nitrate (Pb(NO₃)₂) and potassium sulfate (K₂SO₄)
  • Pb(NO₃)₂(aq) + K₂SO₄(aq) → PbSO₄(______ ) + 2KNO₃(_______ )
2. Barium Sulfate (BaSO₄)
  • Reactants: Barium nitrate (Ba(NO₃)₂) and potassium sulfate (K₂SO₄)
  • Ba(NO₃)₂(aq) + K₂SO₄(aq) → BaSO₄(______ ) + 2KNO₃(_______ )
3. Calcium Sulfate (CaSO₄)
  • Reactants: Calcium nitrate (Ca(NO₃)₂) and potassium sulfate (K₂SO₄)
  • Ca(NO₃)₂(aq) + K₂SO₄(aq) → CaSO₄(______ ) + 2KNO₃(_______ )

Other Answer Choices:
s
aq
6

Give the steps in order to make a salt by precipitation
https://www.focuselearning.co.uk/s/1q44l3wsl0zo

  1. c) collect the residue (in the filter paper)
  2. e) dry the salt (leave in a warm dry place or press between dry filter paper)
  3. d) wash the salt with a minimum volume of distilled water
  4. f) scrape the pure dry salt into the sample bottle.
  5. b) filter the mixture
  6. a) add the solutions of the two soluble salts together
10

Click the correct column

6
Procedure for Preparing Insoluble Salts via Precipitation:
https://www.focuselearning.co.uk/s/1q44l3wsl0zo
  1. _____________ the soluble reactants: Dissolve each of the chosen soluble salts in separate beakers of distilled water.
  2. ______________________ : Carefully pour one solution into the other, stirring continuously. The insoluble salt will form as a precipitate.
  3. Separate the precipitate by _______________ : Use filtration to separate the solid precipitate from the remaining solution (filtrate).
  4. _________ the precipitate: Wash the precipitate with distilled water to remove any remaining soluble ions.
  5. ________ the precipitate: Dry the precipitate by leaving it to air dry, or pressing between ___________ papers
Other Answer Choices:
Mix the solutions
Dry
Wash
filtration
Dissolve
filter
6
Procedure for Preparing Insoluble Salts via Precipitation:
https://www.focuselearning.co.uk/s/1q44l3wsl0zo
  1. _______ the soluble reactants: Dissolve each of the chosen soluble salts in separate beakers of distilled water.
  2. _______ the solutions: Carefully pour one solution into the other, stirring continuously. The insoluble salt will form as a _______ .
  3. Separate the precipitate by _______ : Use filtration to separate the solid precipitate from the remaining solution (filtrate).
  4. _______ the precipitate: Wash the precipitate with distilled water to remove any remaining soluble ions.
  5. _______ the precipitate: Dry the precipitate by leaving it to air dry, or pressing it between _______ papers.
1

9.1 What will the student see when the two solutions are mixed and react?

1

The student can separate and collect the insoluble lead salt by .....

A condensation.
B crystallisation.
C distillation.
D filtration.

1

What is the insoluble lead salt produced in this reaction?

A Lead chloride
B Lead nitrate
C Lead oxide
D Lead sulphate

1

The other product in the reaction is .....

A carbon dioxide.
B sodium chloride.
C sodium nitrate.
D water.

4

Match the state symbol to the state
When deciding on a separation technique the states of matter will be important.

(aq) + (aq) →(s) Add two solutions then filter, wash and dry the residue.

(s) + (aq) →(aq) Add solid to excess, filter, evaporate the excess water from the filtrate, wash and dry the crystals.

(aq) + (aq) →(aq) Titrate the acid and alkali to determine the volumes of the solutions required, repeat the titration without the indicator, evaporate the excess water and wash and dry the crystals.

Draggable itemCorresponding Item
(g)
solid
(l)
liquid
(aq)
gas
(s)
aqueous (dissolved in water)
1

https://www.focuselearning.co.uk/s/2w415wpe4nd5

Which method should be used? CuO(s) + H₂SO₄(aq) → CuSO₄(aq) + H₂O(l)

1

Which method should be used? CuCO₃(s) + H₂SO₄(aq) → CuSO₄(aq) + H₂O(l) +CO₂

1

Which method should be used? Mg(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂(g)

1

Which method should be used? NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

1

Which method should be used? KOH(aq) + HCl(aq) → KCl(aq) + H₂O(l)

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Which method should be used? KOH(aq) + HNO₃(aq) → KNO₃ (aq) + H₂O(l)

1

Which method should be used? 2NaOH(aq) + H2SO4(aq) → Na2SO4 (aq) + 2H₂O(l)

1

Which method should be used? Pb(NO₃)₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq)

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Which method should be used? AgNO₃(aq) + KI(aq) → AgI(s) + KNO₃(aq)

1

Make a set of notes with one example of each method and the steps required to get a pure dry sample of the salt.
Upload your notes to this question.

1

What grade would you expect to achieve on a test on making salts after tasking this formative??