Question

Question #abd9f

Answer 1

The theoretical yield is the maximum amount of product that can be obtained if all the reactants react completely according to the equation.

Here is an example:

What is the theoretical yield of magnesium oxide if 1.2g of magnesium is burned in excess oxygen?

`2Mg_((s))+O_(2(g))rarr2MgO_((s))`

`2molMgrarr2molMgO`

`A_rMg=24` `A_rO=16`

`2xx24=48grarr2(24+16)=80g`

So 1g Mg `rarr(80)/(48)g= 1.66g` `MgO`

So 1.2g Mg`rarr1.66xx1.2=2.0g` `MgO`

That is the theoretical yield.