Reaction BaO_2(g) $$\rightleftharpoons$$ BaO_(s) + O_2(g); $$\Delta $$H = +ve. In equilibrium condition, pressure of O₂ depends on

Solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25. Then find out pK_b of NH₄OH

The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is

Geometrical isomers differ in