Making salts Insoluble base and precipitation methods For Year 9.

1

What is your Chemistry target grade?

1

What grade did you achieve in your End of Year exam?

1

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

6

Wash the crystals
(using a minimum volume of cold distilled water)
Dry the crystals using filter paper.
Filter the Copper oxide and copper sulfate mixture.
Collect the filtrate in an evaporating dish.
Measure 50cm³ of sulphuric acid with a measuring cylinder. -
Pour the sulfuric acid into a beaker
Warm the sulphuric acid in the beaker
Concentrate the filtrate
(evaporate some of the water using the apparatus shown in the diagram)
Add a spatula of copper oxide (or copper carbonate)
Add additional copper oxide until no more reacts.
Place the concentrated solution in an crystallising dish.
Leave in a warm dry place.

5

Feel free to use the hint.

Add iron to excess then filter the excess iron from the iron sulfate
Heat the filtrate in an evaporating dish (over a water bath)
leave the concentrated filtrate in a warm place to evaporate the water.
Wash the crystals with distilled water dry the crystals with filter paper

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Which acid is used to prepare iron sulphate?
(hint there is only one correct answer)

Citric acid

Hydrochloric acid

Nitric acid

Sulphuric acid

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How is the excess iron is removed from the solution of iron sulphate?

condensation.

crystallisation.

distillation.

filtration.

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Anhydrous iron chloride is made by direct combination of elements. Which elements are used?

Iron and chloride

Iron and chlorine

Iron and hydrochloric acid

Iron, oxygen and chlorine

4

Feel free to use the hint.

Excess zinc is removed by filtration to produce a filtrate of zinc sulfate.
Zinc sulfate crystals are washed with distilled water
The zinc sulfate crystals are dried between two pieces of filter paper.
Solution is heated to remove some water so zinc sulfate crystals form
Zinc added to dilute sulphuric acid until no more zinc reacts (Note bubbles of hydrogen given off)

1

Making insoluble salts What will the student see when the sodium sulfate and lead nitrate solutions are mixed and react?

A blue solution

Bubbles of carbon dioxide gas

Bubbles of hydrogen gas

A white precipitate

1

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

condensation.

crystallisation.

distillation.

filtration.

1

Making insoluble salts What is the insoluble lead salt produced in this reaction between sodium sulfate and lead nitrate?

Lead chloride

Lead nitrate

Lead oxide

Lead sulphate

1

Making insoluble salts What is the soluble product in the reaction between sodium sulfate and lead nitrate?

carbon dioxide.

sodium chloride.

sodium nitrate.

water.

3

There are several general methods of making salts.
Magnesium sulfate (which is soluble in water) could be made by
Mg(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂(g).
MgO(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂O(l)
Mg(OH)₂(s) + H₂SO₄(aq) → MgSO₄(aq) + 2H₂O(l)
MgCO₃(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂O(l) +CO₂(g)
Hint Mg(OH)₂ is insoluble

Reaction of a metal with an acid to make salt + hydrogen (filter excess metal)

reaction between two solutions to form an insoluble salt (Filter the precipitate formed)

Reaction of a metal oxide with an acid to make salt + water (filter excess metal oxide)

Reaction of a metal carbonate with an acid to make salt + water + carbon dioxide (filter excess metal carbonate)

Reaction of a soluble metal hydroxide with an acid (volumes by titration)

1

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt.
Which solution would react with lead nitrate solution to produce lead sulphate?

Lead chloride

Potassium nitrate

Potassium sulphate

Sodium hydroxide

1

Reactions of metals + acids (Note that only the metals above hydrogen in the reactivity series will react with acids)

A

B

C

D

1

Making salts Insoluble base and precipitation methods For Year 9.

What is your Chemistry target grade?

What grade did you achieve in your End of Year exam?

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

Feel free to use the hint.

Which acid is used to prepare iron sulphate?
(hint there is only one correct answer)

How is the excess iron is removed from the solution of iron sulphate?

Anhydrous iron chloride is made by direct combination of elements. Which elements are used?

Feel free to use the hint.

Making insoluble salts What will the student see when the sodium sulfate and lead nitrate solutions are mixed and react?

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

Making insoluble salts What is the insoluble lead salt produced in this reaction between sodium sulfate and lead nitrate?

Making insoluble salts What is the soluble product in the reaction between sodium sulfate and lead nitrate?

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt.
Which solution would react with lead nitrate solution to produce lead sulphate?

Reactions of metals + acids (Note that only the metals above hydrogen in the reactivity series will react with acids)

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

What is your Chemistry target grade?

What grade did you achieve in your End of Year exam?

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

Feel free to use the hint.

Which acid is used to prepare iron sulphate?
(hint there is only one correct answer)

How is the excess iron is removed from the solution of iron sulphate?

Anhydrous iron chloride is made by direct combination of elements. Which elements are used?

Feel free to use the hint.

Making insoluble salts What will the student see when the sodium sulfate and lead nitrate solutions are mixed and react?

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

Making insoluble salts What is the insoluble lead salt produced in this reaction between sodium sulfate and lead nitrate?

Making insoluble salts What is the soluble product in the reaction between sodium sulfate and lead nitrate?

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt.
Which solution would react with lead nitrate solution to produce lead sulphate?

Reactions of metals + acids (Note that only the metals above hydrogen in the reactivity series will react with acids)

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

Making salts Insoluble base and precipitation methods For Year 9.

Making salts Insoluble base and precipitation methods For Year 9.

What is your Chemistry target grade?

What grade did you achieve in your End of Year exam?

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

Feel free to use the hint.

Which acid is used to prepare iron sulphate?(hint there is only one correct answer)

How is the excess iron is removed from the solution of iron sulphate?

Anhydrous iron chloride is made by direct combination of elements. Which elements are used?

Feel free to use the hint.

Making insoluble salts What will the student see when the sodium sulfate and lead nitrate solutions are mixed and react?

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

Making insoluble salts What is the insoluble lead salt produced in this reaction between sodium sulfate and lead nitrate?

Making insoluble salts What is the soluble product in the reaction between sodium sulfate and lead nitrate?

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt. Which solution would react with lead nitrate solution to produce lead sulphate?

Reactions of metals + acids (Note that only the metals above hydrogen in the reactivity series will react with acids)

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

What is your Chemistry target grade?

What grade did you achieve in your End of Year exam?

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

Feel free to use the hint.

Which acid is used to prepare iron sulphate?(hint there is only one correct answer)

How is the excess iron is removed from the solution of iron sulphate?

Anhydrous iron chloride is made by direct combination of elements. Which elements are used?

Feel free to use the hint.

Making insoluble salts What will the student see when the sodium sulfate and lead nitrate solutions are mixed and react?

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

Making insoluble salts What is the insoluble lead salt produced in this reaction between sodium sulfate and lead nitrate?

Making insoluble salts What is the soluble product in the reaction between sodium sulfate and lead nitrate?

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt. Which solution would react with lead nitrate solution to produce lead sulphate?

Reactions of metals + acids (Note that only the metals above hydrogen in the reactivity series will react with acids)

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

Which acid is used to prepare iron sulphate?
(hint there is only one correct answer)

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt.
Which solution would react with lead nitrate solution to produce lead sulphate?

Which acid is used to prepare iron sulphate?
(hint there is only one correct answer)

Lead sulphate, an insoluble salt, can only be prepared by reacting two soluble salts to make a precipitate of an insoluble salt.
Which solution would react with lead nitrate solution to produce lead sulphate?