ऊष्मागतिकी के प्रयोग को करते हुए एक विद्यार्थी का निम्नलिखित पर्यवेक्षण है \(HCl + NaOH \rightarrow NaCl + H _2 O\) \(\Delta H =-57.3\,kJ mol ^{-1}\) \(CH _3 COOH + NaOH ^{ COO } \rightarrow CH _3 COONa + H _2 O\) \(\Delta H =-55.3\,kJ mol ^{-1 .}\) विद्यार्थी द्वारा \(CH _3 COOH\) की परिकलित आयनन एन्थैल्पी \(........kJ\,mol ^{-1}\) है

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.