A. Increasing halogen atom size.

Question

B. Decreasing acid strength.
C. Shortening of the C-C bond.
D. Increasing electronegativity.
E. Higher dipole values going from F to Cl to Br.

cant paste the spartan stuff... whats the answer?!?!?

Answer 1

What's the question?

Answer 2

For fluoracetic acid the highest Boltzmann distribution is when the dihedral angle is at 0 degrees. However, going from chloro- to bromoacetic acid, an increasing dip in the Boltzmann distribution occurs at 0 degrees. What is responsible for this "dip?" (HINT: look at how the structure of the molecule changes as the halogen atom rotates around toward the hydrogen atom attached to the oxygen atom.)

Answer 3

I can tell you its NOT
decreasing acid strength
and its NOT
Increasing electronegativity..
your guess is as good as mine.. : //

Answer 4

its increasing halogen atom size...i just answered it and thankfully got it right

Answer 5

Yes, it is increasing halogen atom size

Answer 6

It is increasing halogen atom size...

For those who care, look at the plots in Spartan and you can automatically rule out Increasing Electronegativity and higher dipole values.