Chemistry · 2019
JEE Main · 10 April 2019, Shift 2 · Q56
For the reaction, 2 SO_2( g )+ O_2( g ) ⇌ 2 SO_3( g ), Δ H =-57.2 kJ mol^-1 and K_c =1.7 × 10^16. Which of the following statement is INCORRECT?
For the reaction,
$$\begin{aligned}
& 2 \mathrm{SO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{SO}_3(\mathrm{~g}), \\
& \Delta \mathrm{H}=-57.2 \mathrm{~kJ} \mathrm{~mol}^{-1} \text { and } \\
& \mathrm{K}_{\mathrm{c}}=1.7 \times 10^{16} .
\end{aligned}
$$
Which of the following statement is INCORRECT ?
Official answer
(4)
The equilibrium constant is large suggestive of reaction going to completion and so no catalyst is required.
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.