A racemic mixture of `(+-) 2-pheynl` propanoic acid on esterification with `(+) 2-butanol` gives two esters. Mention the seterichemistry of the two ester produced.

A racemic mixture of 2- Chloropropanoic acid is treated with excess of (+)-2- Butanol. The reaction can be represented as follows : CH_(2)-underset((pm))underset(Cl)underset(|)(CH)-COOH+CH_(3)-underset(" "(+)" excess")underset(OH)underset(|)(CH)-CH_(2)-CH_(3) rarr CH_(3)-underset(Cl)underset(|)(CH)-COO-overset(" "CH_(3))overset(|)(CH)-CH_(2)-CH_(3)+CH_(3)-underset((+)" (Left unreacted)")underset(OH)underset(|)(CH)-CH_(2)-CH_(3)

Mention two sources of SO_(2) in air.

Give two examples of gases with (1) atomicity = 2

beta- Hydroxy propanoic acid on heating gives acrylic acid. Acrylic acid exists in two diastereomers.

Give two use of Cl_(2)

Give two use of Cl_(2)

Amides undergo hydrolysis to yield carboxylic acid plus amine on heating in either aqueous acid or aqueous base. The conditions required for amide hydrolysis are more severe than those required for the hydrolysis of esters, anhydrides or acid chlorides, but the mechanism is similar (nucleophilic acyl substitution). Nucleophilic acyl substitutions involve a tetrahedral intermediate, hence these are quite different from alkyl substitution (RCH_(2)Broverset(NaCN)to RCH_(2)CN) which involves a pentavalent intermediate or transition state. One of the important reactions of esters is their reaction with two equivalent of Grignard reagent to give tertiary alcohols. Which of the following constitutes the best substrate during the acidic hydrolysis of amides?

Two wires 'A' and 'B' of the same material have their lengths in the ratio 1 : 2 and radii in the ratio 2 : 1 The two wires are connected in parallel across a battery. The ratio of the heat produced in 'A' to the heat produced in 'B' for the same time is

Amides undergo hydrolysis to yield carboxylic acid plus amine on heating in either aqueous acid or aqueous base. The conditions required for amide hydrolysis are more severe than those required for the hydrolysis of esters, anhydrides or acid chlorides, but the mechanism is similar (nucleophilic acyl substitution). Nucleophilic acyl substitutions involve a tetrahedral intermediate, hence these are quite different from alkyl substitution (RCH_(2)Broverset(NaCN)to RCH_(2)CN) which involves a pentavalent intermediate or transition state. One of the important reactions of esters is their reaction with two equivalent of Grignard reagent to give tertiary alcohols. The mechanism involved during the hydrolysis of acid derivatives is: