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How do I calculate the molality of a water solution?

Calculate the molality of a H2SO4 solution in which the mole fraction of water is 85.?

  • Answer:

    Assume 100 mole solution. It will be 15 mole sulfuric acid and 85 mole water. The water will mass 85 * 18 = 1530 g 15 mole sulfuric acid / 1530g water = 0.0098 molal

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Your question is improperly stated. It is impossible to have a mole fraction greater than 1. Perhaps this is mole percent?

ravenwork

Your question is improperly stated. It is impossible to have a mole fraction greater than 1. Perhaps this is mole percent?

ravenwork

Assume 100 mole solution. It will be 15 mole sulfuric acid and 85 mole water. The water will mass 85 * 18 = 1530 g 15 mole sulfuric acid / 1530g water = 0.0098 molal

shashank r

Take 100 mole solution. It will be 15 mole sulfuric acid and 85 mole water. The water will mass 85 * 18 = 1530 g = 1.53 kg. 15 mole sulfuric acid / 1.53 kg water = 0.0098 molal

Robert

Take 100 mole solution. It will be 15 mole sulfuric acid and 85 mole water. The water will mass 85 * 18 = 1530 g = 1.53 kg. 15 mole sulfuric acid / 1.53 kg water = 0.0098 molal

Robert

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