We're being asked to determine the mole fraction of methanol in a mixture of water and methanol.
Recall that mole fraction can be calculated as:
Hence we have to calculate for moles of CH3OH and water using the mass and molar mass provided
A solution is made containing 12.6 g of methanol CH 3OH (32.04 g/mol) in 154 g of water. H20 (18.02 g/mol)
a) Calculate the mole fraction of methanol:
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