question_answer 6)

 H2S, a toxic gas with rotten egg like smell, is used for qualitative analysis. If the solubility of H2S in water at STP is 0.195 m, calculate Henry's law constant.

Answer:

Solubility of H2S gas = 0.195 in = 0.195 mole in 1 kg of the solvent (water) 1 kg of the solvent (water) = 1000 g    Mole fraction of H2S gas in the solution   Pressure at STP = 0.987 bar Applying Henry's law, of