Solubility of MX₂ type electrolytes is 0.5 $$ \times $$ 10^$$-$$4 mole/lit., then find out K_sp of electrolytes.

Which has highest pH?

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