Chemistry Test ...

Consider the following reactions:

\(\mathrm{NO}_{2} \rightleftharpoons \frac{1}{2} \mathrm{N}_{2}+\mathrm{O}_{2}, \mathrm{K}_{1}\)

\(\mathrm{N}_{3} \mathrm{Q}_{4} \rightleftharpoons 2 \mathrm{N} \mathrm{O}_{2}, \mathrm{K}_{2}\)

Give the equilibrium constant for the formation of \(\mathrm{N}_{2} \mathrm{O}_{4}\) from \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\).

For the following reaction, 1 g mole of CaCO₃ is enclosed in a 5 L container.

CaCO₃ (s) CaO (s) + CO₂ (g)

Kp = 1.16 at 1073 K

The percent dissociation of CaCO₃ in the above reaction is

For the reaction Cl₂ + 2I^-⇒I₂ + 2Cl^-, the initial concentration of I- was 0.20 mol L^-1 and the concentration after 20 min was 0.18 mol L^-1. The rate of formation of I2 in mol lit^-1 would be

The resistance of 0.01 N solution of an electrolyte was found to be 210 ohm at 298 K, using a conductivity cell of cell constant 0.66 cm⁻¹. The equivalent conductance of the solution is

If 10²¹ molecules are removed from 200 mg of CO₂, then the number of moles of CO₂ left will be

What is the relation between K_p and K_c in the following reaction?

N₂(g) + 3H₂(g) 2NH₃(g)

How many coulombs of electricity is required for the complete reduction of MnO₄^- in 500 ml of 0.5 M solution to Mn₂⁺ ions?

The pyrimidine bases present in DNA are-

Which of the following statements are true?

(A) Sucrose is a non-reducing sugar.

(B) Glucose is oxidised by bromine water.

(C) Glucose rotates plane polarised light in clockwise direction.

(D) Fructose is oxidised by bromine water.

Standard enthalpies of formation of CO₂ (g), CO (g), N₂O (g) and NO₂(g) in kJ/mol are -393, -110, 81 and 34, respectively. What is the value of (in kJ) in the following reaction?

2NO₂ (g) + 3CO (g) \(\Rightarrow\) N₂O (g) + 3CO₂(g)