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Calculate molality of sulphuric acid solution …

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Calculate molality of sulphuric acid solution in which mole fraction of water is 0.85
  • 1 answers

Preeti Dabral 5 years, 11 months ago

If the mole fraction of water is 0.85, the mole fraction of sulfuric acid is 0.15.
So, we can express the concentration as
0.15mol sulfuric acid 0.85 mol water 
Convert moles of water to kilograms of water
Mass of water = 0.85molH2O×18.02gH2O1molH2O×1kgH2O1000gH2O
=0.0153 kg H2O
Calculate the molal concentration of the water
m = 0.15mol sulphuric acid 0.0153kg water = 9.8 mol/kg

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