November 26, 2015

Homework Help: chemistry urgent

Posted by lynn on Tuesday, November 30, 2010 at 4:33pm.

if 100 g of iron were reacted with 100 g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be:

chemistry urgent - bobpursley, Tuesday, November 30, 2010 at 4:20pm
Balance the equation. Note the coefficents on Fe and O2, that is the mole ratio.

calcuate how many moles of Fe, and O2 you have.

Which is the limiting reactant.

For instance, if the coefficents were 45Fe+ 34O2, the mole ratio of O2 to Fe is 34/45

If you had 2.3 moles of Fe, and 3.2 moles of O2, your mole ratio of O2 to Fe would be 3.2/2.3, significantly greater than the coefficents of needed moles. Well, if you have more, that means you have too much O2, so you limiting reageant would be Fe.

Finally, figure out how much product you get with your limiting reageant.

Dear Bobberley,
I'm still don't get it yet. Please help

4 Fe + 3 O2 -> 2 Fe2O3

a. 143
b. 260
c. 333.7
d. 200
e. none of these

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