I need help with Chemistry.

Question

unbelievabledreams · Answer

How to draw VSEPR of CH3CO2- ?

anonymous · Answer

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The angle around any point to another on the first carbon is 109.5 degrees, meaning it is tetrahedral-shaped and around any point on the second carbon, is 120 degrees, that is, trigonal-shaped.

unbelievabledreams · Answer

CH3 is Tetrahedral (Bent)
CO2 is Trigonal planar?

anonymous · Answer

Not necessarily like that.
When you are asked to do VSEPR, you have to mention the shape and angle around main elements.
That is why I made that description for the first carbon and the second carbon.
The description bases on the number of electron dense region ( number of bonds; if a bond in double or triple, consider as 1 electron dense region).
The C from CH3 binds with the second C and it has 4 electron dense regions, that is why is TETRAhedral and the second carbon has 3 different electron dense region, hence that is why it is TRIgonal.