What is the osmolarity of a $0.20 \mathrm{~M} \mathrm{~KCl}$ solution?

What is the osmolarity of a $0.20 \mathrm{~M} \mathrm{~KCl}$ solution?
  1. $0.10$ osmol
  2. $0.20$ osmol
  3. $0.30$ osmol
  4. $0.40$ osmol

Solution

$K C l ightleftharpoons K^{+}+C l^{-}$
Osmosis is a colligative property and thus
$0.2 \mathrm{M}=0.4 \mathrm{M}$ /

Asked in: JEE-TOPICTESTS-CHEMISTRY

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