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एक प्रथम कोटि की अभिक्रिया में विशिष्ट अभिक्रिया वेग का मान 4.2 x 10-2 s-1 है। 5 g अभिकारक को 2.5 g में परिवर्तित होने में कितना समय लगेगा? 

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Best answer

k = 4.2 x 10-2 s-1 

[A]o = 5g 

[A] = 2.5g

प्रथम कोटि

∴ t = 0.165 x 102 

= 16.5s

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