What is the molarity of a 20.0% w/v glucose solution?
A) 0.111 molar
B) 1.11 molar
C) 2.22 molar
D) 11.1 molar

Name: What is the molarity of a 20.0% w/v glucose solution? A) 0.111 molar B) 1.11 molar C) 2.22 molar D) 11.1 molar
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Quizplus · Accepted Answer

A 20.0% w/v solution means 20.0 grams of glucose per 100 mL of solution. The molar mass of glucose (C6H12O6) is approximately 180 g/mol. Thus, 20.0 g of glucose is 20.0 g / 180 g/mol = 0.111 mol. Since this is in 100 mL, or 0.1 L, the molarity is 0.111 mol / 0.1 L = 1.11 M.

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