For the following questions answer them individually
500 mL of 1.2 M KI solution is ,nixed with 500 mL of 0.2 M $$KMnO_{4}$$ solution in basic medium. The liberated iodine was titrated with standard 0.1 M $$Na_{2}S_{2}O_{3}$$ solution in the presence of starch indicator till the blue color disappeared. The volume (in L) of $$Na_{2}S_{2}O_{3}$$ consumed is_________.(Nearest integer)
X is the number of geometrical isomers exhibited by $$[Pt(NH_{3})(H_{2}O)BrCl]$$.
Y is the number of optically inactive isomer(s) exhibited by $$[CrCl_{2}(ox)_{2}]^{3-}$$
z is the number of geometrical isomers exhibited by $$[Co(NH_{3})_{3}(NO_{2})_{3}]$$.
The value of X + Y + Z is________.
0.53 g of an organic compound (x) when heated with excess of nitric acid ( concentrated) and then with silver nitrate gave 0. 75 g of silver bromide precipitate. 1.0 g of (x) gave 1.32 g of $$CO_{2}$$ gas on combustion. The percentage of hydrogen in the compound (x) is __ %. [Nearest Integer]
[Given: Molar mass in g $$mol^{-1}$$ H : 1, C : 12, Br: 80, Ag: 108, O : 16 ; Compound (x) :$$C_{x}H_{y}Br_{z}$$]
Consider the dissociation equilibrium of the following weak acid $$HA\rightleftharpoons H^{+}(aq)+A^{-}(aq)$$If the pKa of the acid is 4, then the pH of 10 mM HA solution is __ .(Nearest integer)
[Given: The degree of dissociation can be neglected with respect to unity]
Consider the following redox reaction taking place in acidic medium
$$BH_{4}^{-}(aq)+ClO_{3}^{-}(aq)\rightarrow H_{2}BO_{3}^{-}(aq)+Cl^{-}(aq)$$
If the Nerst equation for the above balanced reaction is $$E_{cell}=E_{cell}^{\circ}-\frac{RT}{nF}ln Q$$, then the value of n is______.(Nearest integer)
