NEET · Chemistry · STD 12 - 3. Chemical kinetics

निम्नलिखित वक्र किसी अभिक्रिया की बलगतिकी को दर्शाता है : शून्य और प्रथम कोटि अभिक्रियाओं के लिए \(y\) और \(x\) अक्ष क्रमशः हैं?

A शून्य कोटि \((y=\) सांद्रता और \(x=\) समय), प्रथम कोटि ( \(y=\) दर स्थिरांक और \(x=\) सांद्रता)
B शुन्य कोटि \(\left(y=\right.\) दर और \(x=\) सांद्रता), प्रथम कोटि \(\left(y= t _{1 / 2}\right.\) और \(x=\) सांद्रता)
C शून्य कोटि \((y=\) दर और \(x=\) सांद्रता \()\), प्रथम कोटि \((y=\) दर और \(\left.x= t _{1 / 2}\right)\)
D शून्य कोटि \((y=\) सांद्रता और \(x=\) समय), प्रथम कोटि \(\left(y= t _{1 / 2}\right.\) और \(x=\) सांद्रता \()\)

Verified Solution

Answer & Solution

Correct Answer

(B) शुन्य कोटि \(\left(y=\right.\) दर और \(x=\) सांद्रता), प्रथम कोटि \(\left(y= t _{1 / 2}\right.\) और \(x=\) सांद्रता)

Step-by-step Solution

Detailed explanation

\((I)\) curve is suitable for zero order if \(y=\) rate and \(x =\) concentration because in case of zero order reaction rate is constant and does not depend on conc \(^{n}\). \((II)\) curve is suitable for first order if \(y=t_{1 / 2}\) and \(x=\) conc \(^{n}\) because in case of first order \(t_{1 / 2}\) does not depend on conc \(^{ n }\).

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.

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