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If mole fraction of NaCl is 0.1 in an aquas solution. Then what is the molality of NaCl.

If mole fraction of NaCl is 0.1 in an aquas solution. Then what is the molality of NaCl.

Grade:11

1 Answers

Jobin C J
22 Points
6 years ago
0.1mol NaCl ----> 0.9mol H₂O ;0.1mol NaCl ----> 0.9 × 18g H₂O ;Molality = No.of moles of solute per Kg of Solvent ;χ mol NaCl ----> 1000g H₂O ;∴ x = (0.1×1000)⁄(0.9×18) ≈ 6.16 ;x = Molality ≈ 6.16m ;Jobin CJXII

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