Precipitation reactions of some aqueous metal ions with ammonia solution

Precipitation reactions of some aqueous metal ions with ammonia solution

High School Chemistry

AQA  A Level Chemistry

Precipitation reactions of some aqueous metal ions with ammonia solution

Aqueous ammonia solution (2M and conc. ammonia were used) was added to aqueous solutions of Fe2+, Cu2+, Fe3+ and Al3+

All concentrations approximate:

iron (II) sulfate, 0.1M
copper (II) sulfate, 0.1M
iron (III) chloride, 0.1M
aluminium sulfate, 0.1M
aqueous ammonia, 2M
conc. ammonia was used to dissolve the copper (II) hydroxide ppt.

I think the iron (II) sulfate had undergone some oxidation to iron (III) by reacting with oxygen from the air.

VID 20180510 134855

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