Chemistry · 2025
JEE Main · 22 January 2025, Shift 1 · Q71
Some CO_2 gas was kept in a sealed container at a pressure of 1 atm and at 273 K. This entire amount of CO_2 gas was later passed through an aqueous…
Some $\displaystyle \mathrm{CO}_2$ gas was kept in a sealed container at a pressure of $\displaystyle 1$ atm and at $\displaystyle 273$ K. This entire amount of $\displaystyle \mathrm{CO}_2$ gas was later passed through an aqueous solution of $\displaystyle \mathrm{Ca}(\mathrm{OH})_2$. The excess unreacted $\displaystyle \mathrm{Ca}(\mathrm{OH})_2$ was later neutralized with $\displaystyle 0.1$ M of $\displaystyle 40$ mL HCl . If the volume of the sealed container of $\displaystyle \mathrm{CO}_2$ was x, then x is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{cm}^3$ (nearest integer).
[Given : The entire amount of $\displaystyle \mathrm{CO}_2(\mathrm{~g})$ reacted with exactly half the initial amount of $\displaystyle \mathrm{Ca}(\mathrm{OH})_2$ present in the aqueous solution.]
Official answer
From NTA’s final answer key for this paper.
45
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.