Oxaloacetic acid is an intermediate involved in the citric acid cycle of food metabolism. What is the hybridization of the various carbon atoms in oxaloacetic acid, and what are the approximate values of the various bond angles?

Video transcript

Hey everyone, we're told that piru vic acid can be produced from glucose through glycol icis determine the hybridization of all the carbon atoms and periodic acid and the approximate bond angles around in the molecule first, I'm going to go ahead and label our carbons here. So our first one will be carbon A. The second one will be carbon B. And the 3rd 1 will be carbon c. And for oxygen, I'll label this as D. So starting off with carbon A. When we look at our valence electrons, we know that this will be two S 22 P two. So a total of four valence electrons. And we can see that we have four electron groups. So that will be an S. Plus A P plus API and plus aPI. So this gets us to S. P three. And since we have S. P. Three, that means that we will be tetra hydro With a bond angle of 109.5°. Now let's go ahead and look at carbon B. For carbon be again the valence electrons is going to be To us to to P two. And looking at our molecule, we can see that we have three electron groups surrounding our carbon B. Which means we have an S plus API and plus Api. Which gets us to S. P. Two. And as we've learned S. P two is going to be tribunal plainer With a bond angle of 120°. Now let's go ahead and look at carbon C. For carbon C. Again, our valence electrons is going to be To us to to P two. And looking at our molecule, we can see that we have three electron groups as well. So similar to carbon B. We have an S. Plus api plus api which gets us to S. P. Two. Again, this is tribunal plainer With a bond angle of 120°. And lastly looking at our oxygen which we labeled as oxygen D. For our valence electrons, This is going to be to us to to P four. And looking at our molecule, we can see That we have four electron groups. So we have two atoms and two lone pairs. So that gets us to S plus P plus P and plus P, which is S. P three. Now, this will also give us a tetrahedron shape Or a bent shape due to those two lone pairs. So our bond angle is going to be 109.5°. And these are going to be our final answers for this question. Now, I hope that made sense. And let us know if you have any questions