Answer to Question #147462 in General Chemistry for phillip

Question

What is the percent yield of iron if the reaction of 64.5 g of iron(III) oxide produces 14.0 g of iron?

Answer 1

To calculate percent yield, we need to find the theoretical yield firstly

Using a mass-mass relationship

If 160g of iron(III)oxide yields 56g of iron

Then 64.5g of iron(III)oxide will yield;

=64.5×56/160=22.6g

Theoretical yield =22.6g

To calculate percent yield we use the formula;

(Actual yield/theoretical yield)×100

=(14/22.6)×100

=62%