Question

At high temperatures, solid ammonium chloride decomposes into gaseous ammonia and hydrogen chloride.
NH4Cl (s) ⇌ NH3 (g) + HCl (g)
a) An excess of ammonium chloride was introduced into an evacuated container. After raising the temperature to 340 ° C, the pressure was measured 1.013 bar. Calculate the equilibrium constant at this temperature. (4p)
b) A container of volume 1.00 dm3 initially contained 0.0200 moles of ammonia. What are the partial pressures for ammonia and hydrogen chloride after an excess of ammonium chloride is introduced into the container and the temperature is raised to 340 ° C?

The answer is a) K = 0,2565 b) P = 1,229 bar för NH3(g); P = 0,209 bar för HCl(g)

Answer 1

Answer :-

This question is solved by using the simple concept of equilibrium reaction and using the expression of equilibrium constant.

The answer is given in the image,