mE + nF -----> pG + qH 
In the equation shown, the equilibrium constant is given by?

(I). 3CuO(s) + 2NH3(g) -----> 3Cu(s) + 3H2O(l) + N2(g) 
(II). 2NH3(g) + 3Cl2(g) -----> 6HCl(g) + N2(g) 
(III). 4NH3(g) + 3O2(g) -----> 6H2O(l) + N2(g) 
The reactions represented by the equations above demonstrate the

The salt that reacts with dilute hydrochloric acid to produce a pungent smelling gas which decolourizes acidified purple potassium tetraoxomanganate (VII) solution is

The refreshing and characteristic taste of soda water and other soft drinks is as a result of the presence of

Which of the following are mixtures? 
I. Petroleum 
II. Rubber latex 
III. Vulcanizer's solution 
IV. Carbon sulphide