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$\begingroup$ +1. That's why $\ce{K4[Fe(CN)6}$ is used in non-toxic cyanation reaction. $\endgroup$
– Nilay Ghosh
Commented Dec 24, 2022 at 12:11
1

$\begingroup$ @NilayGhosh My professor of chemistry on high school told us once that when he had been a young teacher, he had regularly demonstrated the lack of its toxicity by eating the salt during the lecture. He later concluded that it was too crazy and stopped. $\endgroup$
– Poutnik
Commented Dec 24, 2022 at 14:00
$\begingroup$ @Poutnik It's also crazy because a student might misunderstand and ingest a different cyanide salt in attempt to copy, but with a fatal result. $\endgroup$
– Andrew Morton
Commented Dec 25, 2022 at 12:47
$\begingroup$ @Poutnik. The first equation between $\ce{Ag}$ and $\ce{CN^-}$ is not correct. It contains $4$ H atoms on the left-hand side, and only $2$ H atoms on the right-hand side. $\endgroup$
– Maurice
Commented Dec 25, 2022 at 21:14
$\begingroup$ @Maurice Try again :-) 4 = 2 + 2. $\endgroup$
– Poutnik
Commented Dec 25, 2022 at 21:19

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