Making Insoluble Salts by Precipitation

You would not make lead salts by reacting lead by acids.

Why not ?

Balance the following equations:

a) ${\mathrm{CaCl}}_2\left(\mathrm{aq}\right)+ {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CaSO}}_4\left(\mathrm{s}\right)\downarrow + \mathrm{NaCl}\left(\mathrm{aq}\right)$.

b) ${\mathrm{MgCl}}_2\left(\mathrm{aq}\right) + {\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{aq}\right) \to {\mathrm{MgCO}}_3\left(\mathrm{s}\right)\downarrow +\mathrm{NaCl} \left(\mathrm{aq}\right)$.

c) ${\mathrm{ZnCl}}_2 + {\mathrm{Na}}_2{\mathrm{CO}}_3\to {\mathrm{ZnCO}}_3\downarrow + \mathrm{NaCl}$.

d) ${\mathrm{PbNO}}_3 + \mathrm{NaCl} \to {\mathrm{PbCl}}_2\downarrow + {\mathrm{NaNO}}_3$.

Choose two starting compounds you could use to make this insoluble salt Magnesium carbonate.

Write the ionic equations for the reactions.
a) ${\mathrm{CaCl}}_2\left(\mathrm{aq}\right)+ {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CaSO}}_4\left(\mathrm{s}\right)\downarrow + 2\mathrm{NaCl}\left(\mathrm{aq}\right)$.

b) ${\mathrm{MgCl}}_2\left(\mathrm{aq}\right) + 2{\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{aq}\right) \to {\mathrm{MgCO}}_3\left(\mathrm{s}\right)\downarrow + 2\mathrm{NaCl} \left(\mathrm{aq}\right)$.

c) ${\mathrm{ZnCl}}_2 + {\mathrm{Na}}_2{\mathrm{CO}}_3\to {\mathrm{ZnCO}}_3\downarrow + 2\mathrm{NaCl}$ 

d) ${\mathrm{PbNO}}_3 + \mathrm{NaCl} \to {\mathrm{PbCl}}_2\downarrow + {\mathrm{NaNO}}_3$.

Identify the spectator ions from the given reactions.

a) ${\mathrm{CaCl}}_2\left(\mathrm{aq}\right)+ {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CaSO}}_4\left(\mathrm{s}\right)\downarrow + 2\mathrm{NaCl}\left(\mathrm{aq}\right)$.
b) ${\mathrm{MgCl}}_2\left(\mathrm{aq}\right) +{\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{aq}\right) \to {\mathrm{MgCO}}_3\left(\mathrm{s}\right)\downarrow + 2\mathrm{NaCl} \left(\mathrm{aq}\right)$.
c) ${\mathrm{ZnCl}}_2 + {\mathrm{Na}}_2{\mathrm{CO}}_3\to {\mathrm{ZnCO}}_3\downarrow + 2\mathrm{NaCl}$.
d) $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2 + \mathrm{NaCl} \to {\mathrm{PbCl}}_2\downarrow + {\mathrm{NaNO}}_3$.

What is a spectator ion ?

Choose two starting compounds you could use to make this insoluble salt Lead chloride.

Choose two starting compounds you could use to make this insoluble salt Zinc carbonate.

$20{\mathrm{cm}}^3$ of $1\mathrm{M}$ Sulphuric acid was neutralised by $25{\mathrm{cm}}^3$of ammonia solution. Calculate the concentration of ammonia solution.

What volume of $2\mathrm{M}$ hydrochloric acid will neutralize $25{\mathrm{cm}}^3$ of $2\mathrm{M}$ Sodium carbonate?

What is standard solution?

Choose two starting compounds you could use to make this insoluble salt Calcium sulphate.

Name four salts you could not make by precipitation.

Explain what precipitation means?in your words.

List the spectator ions for the formation of silver chloride reaction.

Write the ionic equation for the formation of silver chloride reaction.

The formation of the insoluble compound silver chloride is which type of reaction called?

Write down two starting compounds that could be used to make the insoluble compound silver chloride.