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Stearic effect - relative reactivity of aldehydes and keto
The size of the alkyl group is much more than that of hydrogen. In aldehydes, there is one alkyl set although in ketones, there are two alkyl sets linked to the carbonyl group. The alkyl groups are bigger as compared to a hydrogen atom and these cause hindrance to the attacking group. This is termed as stearic hindrance. As the size and number of the alkyl sets increase, the hindrance to molest of nucleophile as well increases and the reactivity of a carbonyl decreases. The short of hindrance in nucleophilic attack is other reason for the better reactivity of formaldehyde. So, the reactivity follows the order:
The bond energy of an O- H bond is 109 kcal mol 1. When a mole of water is formed from H and O atoms, then 218 kcal is released. Two O-H bonds are there is H2O so 2*109 kcal an
why glass electrode is called indicator electrode
Nitrous acid (HNO2) is an unstable compound when prepared by the following reaction: HCl (g) + NaNO2 (s) ? HNO2 (l) + NaCl (s). As the product of the above reaction is unstable, t
I have a very difficult chemistry online assignment due in and I need help.
Suppose that lysine is dissolved into a buffer to a concluding concentration of 1 mM. Into this buffer, 80 percent of the lysine's side-chain amines are protonated. Determine the p
Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.
Q. Describe Peroxomonosulphuric Acid? It is also known as permonosulphuric acid. It is obtained by the action of chlorosulphuric acid on cold anhydrous hydrogen peroxide :
which quantities are conserved in all oxidation-reduction reactions
Benzene hexa chloride reaction
Q. Classification of Organic Compounds?Groups of Organic Compounds? Ans. Organic compounds are classified on the basis of their functional groups. The common groups of org
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