If 30.2 g of CaO is added to 34.5 g of HCl and 6.35 g of water is formed, what is the percent yield?

Balanced chemical reaction is :

Also 30.2 g of CaO is added to 34.5 g of HCl and 6.35 g of water is formed.

Now , percentage yield is given by :

Moles of CaO ,

Moles of HCl ,

Now , 2 moles of HCl react with 1 mole of .

So , moles of :

Mass of water produced :

But in practical 6.53 g of water is produced .

So ,

Therefore, percent yield is 74.27 %.

Hence, this is the required solution.