Pyruvate is a polar molecule; this is due because of the bonds between the atoms as well as oxygen possessing two unshared electron pairs. In the molecule there are four types of bonds:
- C-C which is nonpolar because its absolutely covalent(same electronegativity value)
- H-+àC this is polar, Carbon has higher electronegativity so it takes more electrons, so arrow points to it, and it is very covalent (2.5-2.2=.3)
- C-+-àO this is polar, Oxygen has higher value than carbon. Moderately Covalent (3.5-2.5=1)
- H-+-àO polar, oxygen has higher value than hydrogen. Somewhat Covalent (3.5-2.2=1.3)
Also there is a particularly more negative area around the oxygens, not only because most of the electrons in bonding get pulled near their due to electronegativity, but also they have a total of 2 unshared electron pairs. Making that area more negative than the rest of the molecule, making pyruvate polar.
Also as an added note, pyruvic acid is water soluble, and since water is polar, that means pyruvate has to be polar as well, because only polar solutes can dissolve in polar solvents.
Also as an added note, pyruvic acid is water soluble, and since water is polar, that means pyruvate has to be polar as well, because only polar solutes can dissolve in polar solvents.
I agree that this molecule is polar. Here, you show each and every bond that occurs in this molecule, between O and C, C and C, O and H, and C and H. You show that the oxygen atoms have a particularly negative charge throughout the molecule, thus making it polar. Here, you also added that Pyruvic Acid is water soluble and thus has to be polar because water can only dissolve polar solvents. Thus, the molecule must be polar.
ReplyDeleteThe font is a little difficult to read, but I like how it contrasts against the black background. The molecule is represented accurately. I agree that the molecule is polar and has all three intermolecular forces acting on it. I'm convinced to buy some pyruvate and harvest my own organisms now. That'd be a cool science experiement.
ReplyDelete-David
ReplyDeleteI agree that the molecule is polar. I liked how you shoed the different types of bonds that are shown in this molecule along with the electrons, double and single bonds, and the arrows from the positive to negative atoms. Everything is displayed and discussed correctly and is easy to view.
-Richard Herzig