Answer : The percent yield of
is, 87.7 %
Solution : Given,
Moles of
= 0.200 mole
Moles of
= 0.200 mole
Molar mass of
= 283.9 g/mole
First we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,

From the balanced reaction we conclude that
As, 5 mole of
react with 1 mole of 
So, 0.200 moles of
react with
moles of 
From this we conclude that,
is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of 
From the reaction, we conclude that
As, 5 mole of
react to give 1 mole of 
So, 0.200 moles of
react to give
moles of 
Now we have to calculate the mass of 


Theoretical yield of
= 11.4 g
Experimental yield of
= 10.0 g
Now we have to calculate the percent yield of 


Therefore, the percent yield of
is, 87.7 %