Question

glucose is an important sugar in many biochemical reactions. What is the molarity of a solution that contains 500 grams of glucose (molecular weight= 180.16 g/mol) in 0.72 liters of solution?

Answer 1

1) Number of moles:

n = mass / molar mass

n = 500 / 180.16

n = 2.7753 moles 

Therefore:

Molarity = moles / Volume ( L)

M = 2.7753 / 0.72

M = 3.854 mol/L⁻¹

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