(a) Draw Newman's projection for the stable staggered form of butane.
(b) Relatively less stability of the staggered form is due to
(i) Torsional strain
(ii) van der Waals' strain
(iii) Combination of the above two

Draw Newman projection of the less stable staggered from of butane. b. Give reason for the relatively less stability of the staggered form.

In the Newman projection formula of the lost stable staggered form of n -butane, which of the following reasons is the causes of its unstability?

(a) Draw sawhorse projection formulae for the two eclipsed conformations of butane. (b) What is the dihedral angle between adjaccent methyl groups? (c) Which conformer has greater torsional strain?

(a) Write the reaction of RCOOH with conc.H_2 OS_4 forming two possible cations. (b) Give the relative stabilities of the cations. ( c) Which cation undergoes (C-O) bond cleavage more readily ? (d) Calculate the van't Hoff factor, i (number of moles of particles formed per mole of solute), in both cases.

Assertion: Staggered form is less stable than the ecliped form Reason: The conformation in which the bond pairs of two central atoms are very far from one another is called stagered form.