Chemistry

For the reaction given below

CoCl₃ . xNH₃ + AgNO₃(aq) ->

If the equivalents of AgCl precipitate but, then the value of x will be__________.

Spin only magnetic moment of ${\left[MnB{r}_6\right]}^{4-}$ is________ B.M (round off to the closest integer)

The equation

k = $\left(6.5*10^{12}{s}^{-1}\right)e^{-26000K/T}$  

Is followed for the decomposition of compound A. The activation energy for the reaction is________ kJ mol^-1 [nearest integer]        (Given : R = 8.314 JK^-1 mol^-1)

The cell potential for the given cell at 298 K

$Pt|H_2\left(g,1bar\right)\left|H^{+}\left(aq\right)\right|\left|C{u}^{2+}\left(aq\right)\right|Cu\left(s\right)is0.31V.$ The pH of the acidic solution is found to be 3, whereas the concentration of Cu²⁺ is 10^-x M. The value of x is________.

(Given : $E_{C{u}^{2+}/Cu}^{\Theta }=0.34Vand\frac{2.303RT}{F}=0.06V)$  

Elevation in boiling point for 1.5 molal solution of glucose in water is 4 K. The depression in freezing point for 4.5 molal solution of glucose in water is 4K. The ratio of molal elevation constant to molal depression constant (K_b/K_f) is________.

2.2g of nitrous oxide (N₂O) gas is cooled at a constant pressure of 1 atm from 310 K to 270 K causing the compression of the gas from 217.1mL to 167.75mL. The change in thermal energy of the process, $\Delta U$  is '-x' J. The value of 'x' is________. [Nearest Integer]

(Given : atomic mass of N = 14 g mol^-1 and of O = 16 g mol^-1.

Molar heat capacity of N₂O is 100 J K^-1 mol^-1)

The number of oxygen's present in a nucleotide formed from a base, that is present only in RNA is_______________.

Compound 'P' on nitration with dil. HNO₃ yields two isomers (A) and (B). These isomers can be separated by steam distillation. Isomers (A) and (B) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on reaction with conc. HNO₃ yields a yellow compound 'C'___________

A box contains 0.90g of liquid water in equilibrium with water vapour at 27°C. The equilibrium vapour pressure of water at 27°C is 32.0 Torr. When the volume of the box is increased, some of the liquid water evaporates to maintain the equilibrium pressure. If all the liquid water evaporates, then the volume of the box must be________ litre. [Nearest Integer]

(Given : R = 0.082 L atm K^-1 mole^-1)

(Ignore the volume of the liquid water and assume water vapours behave as an ideal gas.)

On complete combustion 0.30g of an organic compound gave 0.20g of carbon dioxide and 0.10 g of water. The percentage of carbon in the given organic compound is __________. (Nearest integer)