Chemistry, asked by nemanibookspadcam, 1 year ago

Calculate the mole fraction of glucose in 10%aqueous
solution.

Answers

Answered by sureyaaa
9

since, you've not mentioned what is the volumetric parameter (like w/w,w/v) I'm assuming it to be w/w.

so let's consider the mass of whole solution to be 100g.

now 10% of it is glucose, so 10 gram is glucose and remaining 90 g is water.

therefore, n(glucose)= 10÷180= 1/18. -(1)

n(water)= 90/18= 5. -(2)

n(total)= 5+1/18=91/18.

mole fraction= 1/18÷91/18=1/91

answer-1/91


nemanibookspadcam: How do u know that glucose is 10g
sureyaaa: i assumed the total mass of solution to be 100. and question says, its 10% solution, which means 10% solute, that is glucos. so 10% of 100 is 10
nemanibookspadcam: Why can't water be 10g
sureyaaa: 10% aqueous solution means 10% solute and remaining water
sureyaaa: so 10% solute and 90% water
nemanibookspadcam: Ok
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