aqueous bromide ions Br- (aq) reacts with Ag+ (aq) from AgNO3 (aq)
to produce a cream precipitate of AgBr (s)
a cream precipitate is produced which does not dissolve in dilute NH3 (aq)
but does dissolve in concentrated NH3 (aq)
Ag+ (aq) + Br- (aq) --> AgBr (s) cream solid
aqueous iodide ions I- (aq) reacts with Ag+ (aq) from AgNO3 (aq)
to produce a yellow precipitate of AgI (s)
a yellow precipitate is produced which does not dissolve in either dilute NH3(aq) or concentrated NH3 (aq)
Ag+ (aq) + I- (aq) --> AgI (s) yellow solid
ammonium ions NH4+ reacts with warm NaOH (aq) to produce NH3 (g)
colourless gas produced which turns damp red litmus paper blue (ammonia is an alkaline gas).
NH4+ + OH- (aq) --> NH3 (g) + H2O (l)
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