Asked by kaksha
The density of a 60% (m/m) ethanol solution 0.8937g/ml , calculate the molarity of the solution , step by step .
Molar mass of ethanol = 46.07
Molar mass of ethanol = 46.07
Answers
Answered by
Devron
60% (m/m)=60g of ethanol out of 100g in solution.
60g of ethanol*(1 mole/46.07g)= moles of ethanol
Density=mass/volume
Solving for volume,
Volume=mass/density
Total volume=100g total solution/0.8937g/ml
Molarity=moles/volume in L
Molarity of ethanol solution=moles of ethanol/Total volume*(10^-3)
It could be an easier way to do this, I just cant think of it at the moment.
60g of ethanol*(1 mole/46.07g)= moles of ethanol
Density=mass/volume
Solving for volume,
Volume=mass/density
Total volume=100g total solution/0.8937g/ml
Molarity=moles/volume in L
Molarity of ethanol solution=moles of ethanol/Total volume*(10^-3)
It could be an easier way to do this, I just cant think of it at the moment.
Answered by
Devron
One other thing, your answer should only have 2 significant figures.
Answered by
Anonymous
11.66 m
Answered by
debh
11.7
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