Question

Which among the given equations is balanced chemical equation? 2Mg+02 =2Mg0 or N2 + 3H2 = NH3 which one

Answer 1

Answer:2Mg+O2=2MgO

Explanation:on lhs side Mg=2 and O is also 2

and on rhs side Mg and O both are 2

second equation is not balannced as in that equation:-

on lhs side N=2 H=6 and on rhs side N=1 and H=3

Answer 2

Answer:

2Mg + O2 =2MgO is balanced.

Explanation:

This is because in this equation the no. of moles of Mg = 2 on reactant side as well as product side and No. of moles of O = 2 are also on both reactant and product side equal .

But In Equation N2 + 3H2 = NH3,The no. of moles of both elements are not balanced on the both sides of equation.This could be balanced if we mark 2 before NH3 as follows

N2 + 3H2 = 2 NH3.

Now, it is balanced equation. But remember, in question, It is not balanced.

Hope it helps you.