F4 chemistry acids and alkalis

Please help me to answer the following questions in English.
The best answer is going to obtain 10 points.

3. A few drops of ammonia solution are added separately to
the following metal ion solutions.
K+(aq), Mg2+(aq), Fe2+(aq), Cu2+(aq)
( a ) Which metal ion(s) will form coloured precipitate(s) ? Name
and state the colour of the precipitate(s).
( b ) Which metal ion(s) will form white precipitate(s) ? Write
equation(s) for the formation of the white precipitate(s).
( c ) What ion in ammonia solution is responsible for the formation
of the white and coloured precipitates ?
( d ) Suggest a common use of ammonia in daily life. 4. Limewater is a saturated aqueous solution of calcium hydroxide.
It is an alkaline solution which can be used as a medicine to cure
stomach upset in babies.
( a ) Suggest how limewater is prepared in the laboratory form solid
calcium hydroxide.
( b ) Name the ion which is responsible for the alkaline properties of
lime water.
( c ) When limewater is warmed with ammonium nitrate, a salt,
ammonia gas and water are formed. Write an equation for
the reaction involved.
( d ) What would be observed when the following dilute aqueous
solution is mixed with limewater ? Write an ionic equation
for the reaction involved.
( i ) sodium carbonate
( ii ) copper(II) nitrate