QJEEM21Chfbd1: JEE Main 2021 Chemistry - Class 12 JEEM21Chfbd1 Solution: The ratio of number of water molecules in Mohr's salt and…

Mohr's salt : (NH₄)₂ Fe(SO₄)₂ . 6H₂O

The number of water molecules in Mohr's salt = 6

Potash alum : KAl(SO₄)₂ . 12H₂O

The number of water molecules in potash alum = 12

So ratio of number of water molecules in Mohr's salt and potash alum

$= {6 \over {12}}$

$= {1 \over 2}$

= 0.5

= 5 $\times$ 10 ^{$-$ 1}