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A mixture contains 80% of NaOH and 20% H2O by weight, what is the mole fraction of NaOH?(a) 0.24(b) 0.42(c) 0.64(d) 0.78This question was posed to me in exam.I want to ask this question from Mole Fraction and Mass(Weight) Fraction in portion Moles, Density & Concentration of Basic Chemical Engineering

Answer» RIGHT option is (C) 0.64

Best EXPLANATION: MOLE fraction of HCL = (80/40)[(80/40) + (20/18)] = 0.64.


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