H vs OH

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H vs OH

Postby rachana_korapati3C » Sat Dec 08, 2018 11:08 am

Are A-H bonds stronger than AO-H bonds?

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Re: H vs OH

Postby Chem_Mod » Sat Dec 08, 2018 5:49 pm

There is no definite trend that states this. Covalent bond strength can be determined by examining bond length.

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Re: H vs OH

Postby Desiree1G » Sat Dec 08, 2018 6:12 pm

The longer the A-H bond the easier it is to remove the H+. With AO-H bond the more electronegative the central atom the more acidic the molecule will become.

Nell Mitchell 1E
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Re: H vs OH

Postby Nell Mitchell 1E » Sat Dec 08, 2018 7:01 pm

When comparing AOH and AH the difference is not that one is a stronger acid than another, but instead that you calculate their strengths differently. AH you look at bond length (longer bond=weaker bond=stronger acid). While for AOH you look at the electronegativity of the central atom (more electronegative=more polar=weaker bonds=stronger acid).

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