Finding Conjugate Acid for Thymine (problem 6.21 7th editiion)

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Caitlin_Murphy_3C
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Finding Conjugate Acid for Thymine (problem 6.21 7th editiion)

Postby Caitlin_Murphy_3C » Wed Dec 05, 2018 9:04 pm

Problem 6.21 asks us first to identify how many protons Thymine could potentially accept (2), then asks us where these protons would be located in the conjugate acids. Why is it that when forming a conjugate acid, the H attaches to the NH part of the molecule, instead of the O atoms?

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Re: Finding Conjugate Acid for Thymine (problem 6.21 7th editiion)

Postby Chem_Mod » Thu Dec 06, 2018 10:23 am

The oxygen is much more electronegative than nitrogen, so it's unlikely to share its electrons. If oxygen did share the electrons, it would gain a + charge, which is unstable. Nitrogen is much more favored to accept the H by donating its lone pair electrons.


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