Question

Pyruvate has the chemical formula C3H3O3. Can someone please explain to me how to draw pyruvate with a pH of 7.4?? Thank you :)

Answer 1

http://ajpcell.physiology.org/content/ajpcell/284/1/C44/F2.large.jpg
http://www.chemspider.com/ImageView.aspx?id=11255

Answer 2

the 2nd link is for methyl pyruvate, not pyruvate.
this is pyruvic acid:


using the henderson-hasselbalch equation, we can find if the acidic H has dissociated or not.
\(pH=pKa+log\dfrac{[A^-]}{[HA]}\)
\(7.4=2.5+log\dfrac{[A^-]}{[HA]}\)

\(\dfrac{[A^-]}{[HA]}=\dfrac{79432.823}{1}\)

we can see that its present mostly in the deprotonated form, so, this is what it looks like at pH 7.4

Answer 3

Thank you @aaronq