Question

If 3 moles of calcium reacts with 3 moles of oxygen,how many moles of calcium oxide are formed?

Answer 1

Answer:

3 moles

Explanation:

We know that,

Calcium Oxide is formed by the reaction of calcium with oxygen.

The chemical formula of calcium oxide is CaO.

The reaction involve in it's formation is :-

• 2Ca + O2 --> 2CaO

Here, we can see that,

2 moles of Calcium reacts with 1 mole of oxygen to form 2 moles of Calcium Oxide.

Therefore, we can clearly see that,

Calcium and oxygen are in the ratio of 2:1.

Now, according to question,

If 3 moles of Calcium will react with 3 moles of oxygen, then only 3/2 moles of oxygen will take part in the reaction and tge rest will remain unreacted .

Therefore, oxygen acts as limiting reagent in this case.

And, the amount of Calcium oxide formed will be 3 moles.

The required reaction is as follows:-

• 3 Ca + 3/2 O2 ------> 3 Cao