Question

If 100 atoms of carbon reacts with 400 molecules
of oxygen, find out the correct statements
(1) O, is the limiting reagent
(2) 100 molecules of co, are formed
(3) 200 molecules of Co, are formed
(4) Both (1) & (2)​

Answer 1

Answer:

The answer is 100 molecules of CO2 are formed.

Explanation:

When carbon reacts with oxygen two oxides of carbon are formed either carbon monoxide CO or carbon dioxide CO2.

Some time both oxides can be formed if the reaction does not go to completion.

Let's assume that the reaction goes to completion and forms carbon dioxide.

C + O2 -------->  CO2

We can say each carbon atom uses two atoms of oxygen or one molecule of oxygen to form carbon dioxide.

Here carbon dioxide is limiting reactant and oxygen is in excess. Thus the reaction will end up forming 100 molecules of carbon dioxide.