Question

explain me plzzzz.....

Answer 1

$ASSALAMUALAIKUM$

☺❤☺

As we know that, when NaOH reacts with salts so it form unstable hydroxide

REACTION:-

HgCl2+ 2NaOH -----> 2Nacl + Hg(OH)2

Hg(OH)2 -----> HgO (yellow precipitate) + H2O

HgI2 + 2KI ----> K2 [HgI4]
(red)

K2HgI4 ------> 2KI + Hg + I2
(violet)

hence, (b) option is correct

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