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An IV solution contains 5.10g glucose in 100.5 mL water. What is the molarity of the solution?

Sagot :

Answer:

molarity is defined as the number of moles of solute in 1 L of solvent

number of moles of glucose = mass of glucose present / molar mass of glucose

number of glucose moles = 5.10 g / 180 g/mol = 0.0283 mol

there are 0.0283 mol in 100.5 mL water

we need to find the number of glucose moles in 1000 mL

therefore in 1000 mL there are - 0.0283 mol / (100.5 x 10⁻³ L) = 0.282 mol/L

molality of solution - 0.282 M

Explanation:

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