Name:……………………………………………………. Date: ……………………

Making SaltsWorksheet
This worksheet accompaniesMaking SaltsSummary

and Precipitation ReactionsSummary.

  1. When an acid reacts with a base, a neutralisation reaction occurs, producing a

salt. Using the following equation, name the salts that are produced

in the acid-base reactions.

acid + base salt

a)hydrochloric acid + ammonia →………………………

b)nitric acid + sodium hydroxide→………………………

c)phosphoric acid + potassium hydroxide→………………………

  1. There are three other ways of making salts from acids. Complete the following

equations to illustrate them.

a) acid + metal → salt +………………………

b) acid + ………………………→ salt + water

c) acid + carbonate → salt + ……………………… + water

3. Use the above information to complete the following reactions that form soluble salts

using acids.

a)iron oxide + sulfuric acid →………………………+ water

b)………………………+ hydrochloric acid → magnesium chloride + H2O + CO2

c)zinc + ………………………→ zinc nitrate + hydrogen

  1. Name two ways in which salt is used by humans in everyday life.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

© Boardworks Ltd 2011 1

Name:……………………………………………………. Date: ……………………

5. A student conducts an experiment to obtain the salt zinc nitrate from zinc oxide

powder (ZnO). He adds the powder spoon by spoon into a flask containing 1M of nitric

acid(HNO3).

a) Describe what happens to the first spoonfuls of powder when he mixes it with the acid.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

b) Describe what would happen if the student kept adding zinc oxide to the nitric acid

after the reaction between the acid and metal oxide was complete.

…………………………………………………………………………………….…………………………………………………………………………………………………………….………………………

c) Write a word and symbol equation to show the results of this experiment.

……………………………………………………………………………………..……………………………………………………………………………………………………………..………………………

6. Fill in the missing symbols and balance the following equations for making salts.

a)2Na + Cl2→…………NaCl

b)Al2O3(s) + 3H2SO4(aq)→ Al2(SO4)3(……) + 3H2O (l)

c)H3PO4(aq) + ….KOH(s)→K3PO4(aq) + …H2O(I)

d)LiOH + HNO3→ LiNO+………… + H2O

e) Ba(OH)2 + H2SO… → BaSO4 + 2H2O

f)…………HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H2O
7. Most precipitation reactions are very fast reactions that occur between ions. They
occurwhen two solutions of ions react to form an insoluble solid called a precipitate.

a) Complete the symbolequation for the precipitation reaction between lead nitrate and

potassium iodide that produces the insoluble salt lead iodide.

Pb(NO3)2(aq) + 2Kl(aq)→ Pbl2(s) + …………………(aq)

b)Complete the ionic equation for this reaction.

Pb2+ + 2NO3(-)+ 2K+ + 2l-→…………………

8. Sodium hydroxide was poured into a test tube containing a colourless solution. The

metal’s hydroxide precipitate turned the solutionblue.

a)Identify the metal ion present in the colourless solution.Circle your answer.

Fe2+ Cu2+ Fe3+

b)In another experiment, dilute hydrochloric acid was poured into a test tube containing

a colourless solution. The acid’s hydrogen ions reacted with the metal ions in the

solution and produced the gas sulfur dioxide.

Balance the ionic equation for this reaction.

SO32- + H+(aq) → SO2(g) + H2O(l)

c) Write a balanced ionic equation for the reaction between Cu2+ and OH-.

……………………………………………………………………………………………………………..

10. a) Negative ions in salts can be identified in a solution by adding a reagent. Describe an experiment to show that sulfite ions (SO32-) are present in a solution.

………………………………………………………………………………………….………………….….……………………………………………………………………………………….……..………….……....……………………………………………………………………….…..………….……….…………………………………………………………………………………………………………………......

b) Write the ionic equation for this reaction.

…………………………………………………………………………………………………………….

© Boardworks Ltd 2011 1