At 1990 K and 1 atm pressure, there are equal number of Cl₂, molecules and Cl atoms in the reaction mixture. The value of K_p for the reaction Cl_{2 (g)} $$ \rightleftharpoons $$ 2Cl_(g) under the above conditions is x $$ \times $$ 10^-1.
The value of x is _______. (Rounded off to the nearest integer)

When 9.45 g of CICH₂COOH is added to 500 mL of water, its freezing point drops by 0.5°C. The dissociation constant of CICH₂COOH is x $$ \times $$ 10^-3.
The value of x is ________. (Rounded off to the nearest integer)
[K_f(H20) = 1.86 K kg mol^-1]

4.5 g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. The molarity of the solution in M is x $$ \times $$ 10^-1.
The value of x is _______. (Rounded off to the nearest integer)

The reaction of sulphur in alkaline medium is given below:


The values of 'a' is _______. (Integer answer)