Question

How many moles of sodium oxide will be produced when 10 moles of sodium react with oxygen?

Answer 1

`5` moles of sodium oxide

Explanation:

The reaction is:

`2Na(s)+O_2(g)->Na_2O(s)`

So, the mole ratio between sodium and sodium oxide is `2:1=2`.

Therefore, if ten moles of sodium are used, then we produce:

`10color(red)cancelcolor(black)("mol" \ Na)*(1 \ "mol" \ Na_2O)/(2color(red)cancelcolor(black)("mol" \ Na))=5 \ "mol" \ Na_2O`