Question

Calculate the mole fraction of 18grams of glucose (C6H12O6) in 500grams of water

Answer 1

Answer:

0.0036

Explanation:

molecular weight of glucose is 180g/mol

180 grams of glucose is 1 mole

18 grams are how much moles .... ?

18/180 = 0.1 moles

molecular weight of water is 18g/mol

hence, 18 grams of water is 1 mole,

500grams are how much.... ?

= 500/18

= 27.77mol

mole fraction of Glucose = no. of moles of glucose / total no. of moles

xGlucose = 0.1/(0.1+27.77)

= 0.0036