How many grams of fluorine are required to produce 20.0 grams of FeF₃ from the reaction shown?
2 Fe + 3F₂ → 2 FeF₃

Question

How many grams of fluorine are required to produce 20.0 grams of FeF₃ from the reaction shown? 2 Fe + 3F₂ → 2 FeF₃

Quizplus · Accepted Answer

To find the grams of fluorine needed, first calculate the molar mass of FeF3 (55.85 + 3*19.00 = 112.85 g/mol). Then, find the moles of FeF3 in 20.0 g (20.0 g / 112.85 g/mol = 0.177 moles). According to the balanced equation, 3 moles of F2 produce 2 moles of FeF3, so 0.177 moles of FeF3 require 0.177 * (3/2) = 0.2655 moles of F2. The molar mass of F2 is 38.00 g/mol, so 0.2655 moles of F2 is 0.2655 * 38.00 = 10.1 g of F2.

How Many Grams of Fluorine Are Required to Produce 20