GATE CY 2015 Question Paper (31-Jan-2015) (Shift 1)

Which of the following properties are characteristic of an ideal solution?
(i) $({\Delta }_{mix}G{)}_{T,P}$ is negative
(ii) $({\Delta }_{mix}S{)}_{T,P}$ is positive
(iii) $({\Delta }_{mix}V{)}_{T,P}$ is positive
(iv) $({\Delta }_{mix}H{)}_{T,P}$ is negative

The expression for the equilibrium constant ($K_{eq}$) for the enzyme catalyzed reaction given below, is
$E+S\underset{K_2}{\overset{K_1}{\rightleftharpoons }}ES\underset{K_4}{\overset{K_3}{\rightleftharpoons }}P+E$

Given the $E^{\circ }$ values for the following reaction sequence,
$M{n}^{6+}\stackrel{1.28\text{ V}}{\to }M{n}^{5+}\stackrel{2.9\text{ V}}{\to }M{n}^{4+}\stackrel{0.96\text{ V}}{\to }M{n}^{3+}\stackrel{1.5\text{ V}}{\to }M{n}^{2+}$
the computed value of $E^{\circ }$ for $M{n}^{6+}\to M{n}^{2+}$ (in volts) is _______________

The absorption spectrum of $[Ti(H_{2}O{)}_6{]}^{3+}$ in solution comprises of a maximum with a shoulder. The reason for the shoulder is

The ease of formation of the adduct, $N{H}_3\cdot B{X}_3$ (where, $X=F,Cl,Br$) follows the order