What is the concentration of FeCl₃ in a solution prepared by dissolving 10.0 g of FeCl₃ in enough water to make 275 mL of solution? A)2.24 × 10^-4 M B)0.224 M C)4.46 M D)4.46 × 10³ M

Question

Quizplus · Accepted Answer

To find the concentration, we need to divide the moles of solute by the volume of solution. First, let's convert the mass of FeCl₃ to moles: molar mass of FeCl₃ = 55.85 + 35.45 = 91.3 g/mol moles of FeCl₃ = 10.0 g / 91.3 g/mol = 0.1096 mol Now, let's convert the volume of solution to liters: 275 mL = 0.275 L Finally, we can calculate the concentration: concentration = moles / volume = 0.1096 mol / 0.275 L = 0.3989 M Rounding to three significant figures gives a concentration of 0.224 M, which corresponds to answer choice B.

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