Chemistry · 2020
JEE Main · 3 September 2020, Shift 1 · Q28
Henry's constant (in kbar) for four gases α, β, γ and δ in water at 298 K is given below: (density of water =10^3 kg m^-3 at 298 K) This table…
Henry's constant (in kbar) for four gases $\displaystyle \alpha, \beta, \gamma$ and $\displaystyle \delta$ in water at $\displaystyle 298$ K is given below :
(density of water $\displaystyle =10^3 \mathrm{~kg} \mathrm{~m}^{-3}$ at $\displaystyle 298$ K)
This table implies that :
| $\displaystyle \alpha$ | $\displaystyle \beta$ | $\displaystyle \gamma$ | $\displaystyle \delta$ | |
| $\displaystyle \mathrm{K}_{\mathrm{H}}$ | $\displaystyle 50$ | $\displaystyle 2$ | $\displaystyle 2 \times 10^{-5}$ | $\displaystyle 0.5$ |
Official answer
(2)
solubility of $\displaystyle \gamma$ at $\displaystyle 308$ K is lower than at $\displaystyle 298$ K
(4)
The pressure of a $\displaystyle 55.5$ molal solution of $\displaystyle \delta$ is $\displaystyle 250$ bar
NTA’s answer key accepts either.
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.