\(H_2\) ની \(I_2\) સાથેની પ્રક્રિયા માટે, \(327\,^oC\) પર વેગ અચળાંક \(2.5\times 10^{-4}\,dm^3\,mol^{-1}\,s^{-1}\) અને \(527\,^oC\) પર \(1.0\,dm^3\,mol^{-1}\,s^{-1}\) છે. તો પ્રક્રિયાતી સક્રિયકરણ ઊર્જા (\(kJ\,mol^{-1}\) માં) જણાવો. \((R = 8.314\,J\,K^{-1}\,mol^{-1} )\)

A \(72\)
B \(166\)
C \(150\)
D \(59\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(166\)

Step-by-step Solution

Detailed explanation

\({H_2}(g)\, + \,{I_2}(g)\, \to \,2HI\,(g)\) Apply Arrhenius equation \(\log \,\frac{{{K_2}}}{{{K_1}}}\, = \,\frac{{{E_a}}}{{2.303\,R}}\left( {\frac{1}{{600}} - \frac{1}{{800}}} \right)\)…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

\(0.2\, M\, NaOH\) ના દ્રાવણમાં \(Al(OH)_3\), ની દ્રાવ્યતા શુ થશે ? \(Al(OH)_3\) નો દ્રાવ્યતા ગુણાકાર \(= 2.4 \times 10^{-24}\)

JEE Mains 2019 Hard

સૂચિ \(I\) સાથે સૂચિ \(II\) ને જોડો.

સૂચિ \(I\) સવર્ગ સંકીર્ણ	List \(II\) અયુગ્મિત ઈલેક્ટ્રોનોની સંખ્યા
\(A\) \(\left[ Cr ( CN )_6\right]^{3-}\)	\(I\) \(0\)
\(B\) \(\left[ Fe \left( H _2 O \right)_6\right]^{2+}\)	\(II\) \(3\)
\(C\) \(\left[ Co \left( NH _3\right)_6\right]^{3+}\)	\(III\) \(2\)
\(D\) \(\left[ Ni \left( NH _3\right)_6\right]^{2+}\)	\(IV\) \(4\)

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