Question

Give solubility order for:- (i)alkali metal per chlorates (ii)alkali metal bicarbonates (iii)lead (II) halides (iv)mercury (II) halides?

Answer 1

Generally, it is difficult to say whether alkali metal compounds are more soluble or halide compounds are more soluble.

Explanation:

However in this case, for the alkali metal compounds, let's take sodium (because it's the most common) and for the halide compounds, let's take chloride (because it's the most common too).

According to pubchem.ncbi.nlm.nih.gov:
The solubility of sodium perchlorate in water is 2096 g/L water (at 25°C).
The solubility of sodium bicarbonate in water is 100 g/L water (at 25°C).
The solubility of lead (II) chloride in water is 10.8 g/L water (at 25°C).
The solubility of mercury (II) chloride in water is 74 g/L water (at 25°C).

Therefore, for now, we can say that the order is (i) alkali metal perchlorates, (ii) alkali metal bicarbonates, (iv) mercury (II) halides, and (iii) lead (II) halides.

Hope this use of examples helps!