Chemistry · 2022
JEE Main · 25 June 2022, Shift 2 · Q63
Solute A associates in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the freezing point by 0.2 °C. The percentage…
Solute A associates in water. When $\displaystyle 0.7$ g of solute A is dissolved in $\displaystyle 42.0$ g of water, it depresses the freezing point by $\displaystyle 0.2$ °C. The percentage association of solute A in water, is :
[Given: Molar mass of $\displaystyle \mathrm{A}=93 \mathrm{~g} \mathrm{~mol}^{-1}$. Molal depression constant of water is $\displaystyle 1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$.]
Official answer
(4)
$\displaystyle 80$%
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.