\(Na _{( g )}\) से \(Na ^{+}\)बनने के लिए आयनन ऐन्थैल्पी \(495.8\, kJ\, mol ^{-1}\) है और \(Br\) की इलेक्ट्रॉन ग्रहण ऐन्थैल्पी \(-325.0 \,kJ \,mol ^{-1}\) है। \(NaBr\) की जालक ऐन्थैल्पी \(-728.4\, kJ\,mol ^{-1}\) दी हुयी है। आयनिक ठोस अवस्था में \(NaBr\) की निर्माण की ऊर्जा है \((-)\)....................\(\times 10^{-1} kJ mol ^{-1}\).

A \(5581\)
B \(4856\)
C \(5596\)
D \(5576\)

Verified Solution

Answer & Solution

Correct Answer

(D) \(5576\)

Step-by-step Solution

Detailed explanation

\(\Delta H _{\text {formation }}= IE _{1}+\Delta Heg _{1}+ LE\) \(=495.8+(-325)+(-728.4)\) \(=-557.6\) \(=-5576 \times 10^{-1} KJ / mol .\) Note: The above calculation is not for \(\Delta H _{\text {formation }}\) but for \(\Delta H _{ Reaction}\) But on the basis of given data…

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

सूची \(-I\) को सूची \(-II\) से मिलाइये

सूची \(-I\) (स्पीशीज)	सूची \(-II\) (संकरित कक्षक)
\((a)\) \(\mathrm{SF}_{4}\)	\((i)\) \(\mathrm{sp}^{3} \mathrm{~d}^{2}\)
\((b)\) \(\mathrm{IF}_{5}\)	\((ii)\) \(\mathrm{d}^{2} \mathrm{sp}^{3}\)
\((c)\) \(\mathrm{NO}_{2}^{+}\)	\((iii)\) \(\mathrm{sp}^{3} \mathrm{~d}\)
\((d)\) \(\mathrm{NH}_{4}^{+}\)	\((iv)\) \(\mathrm{sp}^{3}\)
	\((v)\) \(\mathrm{sp}\)

नीचे दिए विकल्पों में से सही उत्तर चुनिए

JEE Mains 2021 Hard

Explore more questions on app

From JEE Mains

Explore more questions on app