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What is the molality of 5% NaHClO (bleach) solution?
Can someone explain how to solve this problem please?
3 Answers
- Dr.ALv 71 decade agoFavorite Answer
The formula is NaClO
5 % by mass means 5 g of NaClO + 95 g of water
moles NaClO = 5 g/74.4418 g/mol=0.0672
Mass water = 0.095 Kg
molality = 0.0672 / 0.095 =0.71
- 1 decade ago
It would be .05mol/kg.
Molality=mol solute/kg solvent, and because there is no more information given, you assume that there is 5% of a mole of bleach dissolved in 1kg of solution, and therefore the molality would be .05mol/kg.
