A student wishes to prepare a 5.6% (m/m) iron (III) chloride solution with 0.36 grams of FeCl3. How many grams of water must the student add to the solute?

Question

Enter your answer with the proper number of significant figures.

1. 
   

Answer 1

5.6% (m/m) means 5.6 g FeCl3 in 100 g solution

5.6 g /100 g = 0.36 g/x g and x = 6.43 g solution

grams H2O = 6.43 g solution - 0.36 g FeCl3 = 6.07 g H2O