Chemistry · 2022
JEE Main · 29 June 2022, Shift 1 · Q83
2 mL of acetic acid is dissolved in water to make 2.0 L of solution. The depression in freezing point observed for this strength of acid is 0.0198°C.…
$\displaystyle 2$ mL of acetic acid is dissolved in water to make $\displaystyle 2.0$ L of solution. The depression in freezing point observed for this strength of acid is $\displaystyle 0.0198$°C. The percentage of dissociation of the acid is \_\_\_\_. (Nearest integer)
[Given : Density of acetic acid is $\displaystyle 1.02 \mathrm{~g} \mathrm{~mL}^{-1}$
Molar mass of acetic acid is $\displaystyle 60 \mathrm{~g} \mathrm{~mol}^{-1}$
$$\left.\mathrm{K}_f\left(\mathrm{H}_2 \mathrm{O}\right)=1.85 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right]
$$
Official answer
5
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.