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...

See
This Answer Now

Start your subscription to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your Subscription

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.

Approved by eNotes Editorial Team