What is the concentration of a 450 mL solution that contains 200 grams of iron (II) chloride?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

The concentration of a solution can be expressed in terms of its molarity (M). A solution with a molarity of one has a concentration of one mole of the solute in every one liter of the solution.

Here we have a solution that contains 200 grams of iron (II) chloride in 450 mL of the solution. I have taken the iron (II) chloride to be anhydrous in nature. This has a molecular mass of 126.751 g/mole.

200 g of the compound constitutes 200/126.751 = 1.577 moles.

1.577 moles dissolved in 450 mL of the solution gives a molarity of 1.577/0.450 = 3.5

The required concentration of the 450 mL solution that contains 200 g of iron (II) chloride is 3.5 M.

See eNotes Ad-Free

Start your 48-hour free trial to get access to more than 30,000 additional guides and more than 350,000 Homework Help questions answered by our experts.

Get 48 Hours Free Access
Approved by eNotes Editorial Team