Determine the mole fraction of ch3oh and h2o in a solution prepared by dissolving 5.5 gm of alcohol in 40 gm of h2o. M of h2o is 18 and M of ch3oh is 32.
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Answer:-
Given:
Mass of Alcohol in grams (m) = 5.5 gms.
Molar mass of Alcohol (M) = 32 g/mol.
We know that,
→ Number of moles of Alcohol = (5.5)/32.
→ Number of moles of Alcohol = 0.17 mol.
Mass of Water in grams(m) = 40 gms.
Molar mass of Water(M) = 18 g/mol.
→ Number of moles of water = 40/18
→ Number of moles of water = 2.22 mol.
Total number of moles = 0.17 + 2.22 = 2.39 mol.
Now,
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