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u have explained that when one o-h bond breaks in water second gets weaker. then why is at so that second bond requires more energy than first to break

Asked by 20th July 2012, 11:18 PM
Answered by Expert
Answer:
Oxygen is very electronegative, if you take away one hydrogen bond ...the electron density on it greatly increases..

Hence the other hydrogen-oxygen bond which was already very strong becomes even more stronger.  
Answered by Expert 24th July 2012, 9:02 AM
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