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Slide 2

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What is a precipitation reaction?
A reaction in which an insoluble compound is formed that settles at the
bottom of the solution as a solid.
That insoluble compound is called a precipitate.
And Halide?
Halogens…read more

Slide 3

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Huh? What is that?
When silver ions are added to a solution containing Chlorine
ions, Bromine ions and Iodine ions, it creates a silver halide
Eg. Silver Chlorine reaction:
AgNO3(aq) + NaCl(aq) AgCl(s) + NaNO3(aq)
But the general equation of Silver Halide is:
Ag+ (aq) + X (aq) AgX(s)…read more

Slide 4

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When silver ions react with these halogens, they
produce a precipitates which have distinctive colours.
What are they?
Silver Chloride ­ White
Silver Bromide ­ Cream
Silver Iodide ­ Yellow…read more

Slide 5

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Since, Silver Bromide and Silver Chloride can decompose
under sunlight, they are used for photography and films.
The small deposits of silver create the dark areas on a
black and white negatives.
Sliver Chloride's precipitate turns a greyish purple colour
in sunlight.…read more

Slide 6

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Write the ionic precipitation reaction equation (without including
the spectator ions) for:
Silver Bromide
Silver Iodide
1) Ag+ (aq) + Br- (aq) AgBr (s)
2) Ag+ (aq) + I- (aq) AgI (s)…read more

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