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प्लेटिनम की सतह पर NH3 का विघटन शून्य कोटि की अभिक्रिया है। यदि इस अभिक्रिया का वेग स्थिरांक (k) 4 x 10-3 m s-1 है, तो NH3 की प्रारम्भिक सांद्रता 0.1 M से घटकर 0.064 M होने में कितना समय लगेगा?

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प्लेटिनम सतह पर NH3 का विघटन शून्य कोटि की अभिक्रिया है।

प्लेटिनम सतह

= 0.009 x 103 s

= 9s.

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