Question

In: Chemistry

a solution is prepared by mixing equal masses of methanol, ch3oh, and ethanol, ch3ch2oh what is...

a solution is prepared by mixing equal masses of methanol, ch3oh, and ethanol, ch3ch2oh what is the mole fraction of each component in the mixture

Solutions

Expert Solution

mass of CH3OH is X

no of moles of CH3OH n1 = X/32

mass of CH3-CH2-OH is X

no of moles of CH3-CH2-OH n2 = X/46

Total no of moles = n1+ n2

                        = X/32+ X/46 = 46X+ 32X/1472

                      = 78X/1472 = 0.053X

mole fraction of CH3OH = n1/n1+n2

                                   = X/32/0.053X

                                  = 0.59

mole fraction of CH3OH+ mole fraction of CH3-CH2-OH = 1

mole fraction of CH3-CH2-OH = 1-0.59 = 0.41


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