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Organic chemistry help? Direction of equilibrium?

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asked Sep 10, 2015 in CHEMISTRY by anonymous

1 Answer

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(2)

Structural effect of acidity:

Removal of a proton, H+ , decreases the formal charge on an atom or molecule by one unit, thereby increasing the acidity of the reaction.

Similarly adding of a proton, H+ , increases the formal charge on an atom or molecule by one unit, thereby increasing the basicity of the reaction.

Observe the structure:

Write the structure in the chemical formula.

image

Hence vinyl accepts a hydrogen atom, hence the charge on the atom is increased by 1 unit.

Hence the acidity of the reaction decreases.

Predict the direction of equilibrium:

The following statements are equivalent to predict the direction of equilibrium:

  • The reaction will proceed in the direction to form the weaker base.
  • The reaction will proceed in the direction to form the weaker acid.

image

Hence the weaker base is image.

As the products dominate the reactants, the equlibrium lies to the left.

Hence equlibrium takes as follows:

image

answered Sep 10, 2015 by Lucy Mentor
edited Sep 10, 2015 by Lucy

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