After adding non-volatile solute freezing point of water decreases to -0.186C. Calculate ΔTb if Kf = 1.86 K kg mol-1 and Kb =0.521 K kg mol-1.
0.521
0.0521
1.86
0.0186
In the given set of reactions, . The IUPC name of product Y is
N-methylpropanamine
N-isopropylmethanamine
Butan-2-amine
N-methylpropan-2-amine
The hydrolysis of optically active 2-bromobutane with aqueous NaOH result in the formation of
(+) butan -2-ol
(-) butan-2-ol
(±) butan-1-ol
(±) butan-2-ol
The distinguishing test between methanoic acid and ethanoic acid is
litmus test
Tollen's test
esterficiation test
sodium bicarbonate test
B.
Tollen's test
Methanoic acid is unique amongst simple carboxylic acids, since it contains a hydrogen atom instead of an alkyl group (HCOOH) i.e it contains both an aldeny dic group and a carboxyl group.
So, like aldehyde, methanoic acid reduces Tollen's reagent to shining silver mirror but ethanoic acid does not give this test.
Glycogen is
a polymer of β-D-glucose units
a structural polysaccharide
structurally very much similar to amylopectin
structurally similar to amylopectin but extensively branched
The formation of cyanohydrins from a ketone is an example of
nucleophilic substitution
nucleophilic addition
electrophilic addition
electrophilic substitution