Question

CH4 + 2O2 → CO2 + __H2O

In order to balance the equation, what coefficient must be placed in front of H2O?

2
4
1
3

Answer 1

it is 2... because we have 4 hydrogen in left side and we need 2 more so we multiply it by 2 in order to balance the equation

Answer 2

option A is correct

2 should be place before H20

In L.H.S. atoms of HYDROGEN is 4
IN R.H.S atoms of HYDROGEN are 2 so multiply by 2.