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chem AS
module 3
qualitative analysis
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Cards (3)
Iodide ion
Strongest
reducing
agent of all the
halide
ions
Outer electrons are further from the
positive
nucleus
Experiences more
shielding
Makes it easier to
donate
electrons
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Bromide
Only strong enough to reduce
sulfur
from +6 (in
H2SO4
) to +4 (in SO2)
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Iodide
Strong enough to reduce
sulfur
from +6 (in H2SO4) to +4 (in SO2(g)), to
0
(in S) and -2 (in H2S)
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