Which extraction procedure will completely separate an amide from the byproduct of the reaction between an amine and excess carboxylic acid anhydride?
a. add 0.1 m naoh to quench unreacted anhydride. then add diethyl ether and separate the layers. the amide can be obtained from the ether layer by evaporating the solvent.
b. add 0.1m hal to quench unreacted anhydride. then add diethyl ether and separate the layers. the amide can be obtained from the ether layer by evaporating the solvent.
c. add 0.1m naoh to quench unreacted anhydride. then add diethyl ether and separate the layers. the amide can be obtained from the aqueous layer by neutralizing with hcl.
d. add 0.1m hal to quench unreacted anhydride. then add diethyl ether and separate the layers. the amide can be obtained from the aqueous layer by neutralizing with naoh.

b

explanation:

mitosis

it's all four options.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole