Explain rules of pericyclic, Chemistry

Assignment Help:

Explain rules of pericyclic

The pericyclic selection rules say absolutely nothing about the position of equilibrium in every case.  These rules refer to rates of reactions, not to equilibrium constants.  Other considerations must be used to decide on the position of equilibrium.  The point of the problem is for you to use what you have learned about the relative energies of molecules; the molecule of lower energy is favored in each equilibrium.

(b) The left side of the equation is favored at equilibrium because the double bonds have more alkyl branches.  (Alkyl substitution stabilizes a double bond.)

(d) The right side of the equation is favored at equilibrium because single product is aromatic and thus particularly stable, and the other product is volatile (ethylene is a gas)

 


Related Discussions:- Explain rules of pericyclic

S block element ., discuss the structure of beryllium chloride Becl2.

discuss the structure of beryllium chloride Becl2.

Analytical chemistry, purification of ammonium chloride using set up

purification of ammonium chloride using set up

AP Thermodynamics, Given that ?H°298 for the reaction is -92.2 kJ mol-1, wh...

Given that ?H°298 for the reaction is -92.2 kJ mol-1, which is larger, the total bond dissociation energy of the reactants or the total bond dissociation energy of the products?

Nebulisation techniques, Nebulisation techniques: The accuracy, precis...

Nebulisation techniques: The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer a repr

Vitamins - biomolecules, Vitamins - Biomolecules Additionally to air, w...

Vitamins - Biomolecules Additionally to air, water, proteins, carbohydrates, fats and mineral salts, specific organic substances needed for regulating some of the body procedur

Calculate the weight and volume of acid, A gas contains 350 ppm of H 2 S in...

A gas contains 350 ppm of H 2 S in CO 2 at 72°F and 1.53 atm pressure.  If the gas is liquified, what is the weight fraction H 2 S? You are asked to make up a laboratory soluti

Transition elements, what are the oxides and halides of d-block elements? m...

what are the oxides and halides of d-block elements? mention them groupwise and comment on the stability of their oxidation state.

Dimensionless concentration profiles, Prepare a table that lists the expres...

Prepare a table that lists the expressions for the dimensionless concentration profiles and catalyst effectiveness factors for slab, cylinder and spherical catalysts.

What is half life of reaction and how it can calculated? , Half life of rea...

Half life of reaction refers to as the time during which the concentration of the reactants is reduced to half of the initial concentration or it is the time essential for the comp

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd