Which of the following is correct ?
(a) \( \mathrm{AgCl}(\mathrm{s}...
Which of the following is correct ?
(a) \( \mathrm{AgCl}(\mathrm{s})+\mathrm{Na}_{3} \mathrm{AsO}_{3} \rightarrow \) colourless solution
P
(b) \( \mathrm{FeCl}_{3}(\mathrm{aq})+\mathrm{K}_{4} \mathrm{Fe}(\mathrm{CN})_{6} \rightarrow \) brown precipitate.
W)
(c) \( \mathrm{FeCl}_{3} \) (aq) \( +\mathrm{K}_{3} \mathrm{Fe}(\mathrm{CN})_{6} \rightarrow \) brown colouration.
(d) \( \mathrm{CuSO}_{4}^{3}(\mathrm{aq})+\mathrm{KCN} \) (excess) \( \rightarrow \) blue colouration.
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