Better Students Ask More Questions.
Find the concentration of iron(III) ions and nitrate ions in the solution.40.4 g of...
1 Answer | add yours
40.4 g of Fe(NO3)3.9H2O is dissolved in a sufficient volume of water to create one liter of the solution. Each unit of Fe(NO3)3.9H2O provides 3 nitrate ions and one iron ion.
The molar mass of Fe(NO3)3.9H2O is 403.99
40.4 g of Fe(NO3)3.9H2O is approximately equivalent to 40.4/404.4 = 0.1 moles
As each unit of the hydrated iron nitrate contributes one unit of iron(3) ions, the concentration of iron(3) ions in the solution is 0.1 moles/liter.
As each unit of the hydrated iron nitrate contributes 3 units of nitrate ions, the concentration of nitrate ions if 0.3 moles/liter.
Posted by justaguide on January 20, 2012 at 12:18 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.