00:02
Here in this problem, we have to write balanced equation for the reaction that occurs when methanol is burned in air.
00:11
And we have to write the coefficient of oxygen in the balanced equation.
00:16
Now, let's write the equation.
00:18
Here is methanol in burned in air.
00:22
That means it is reacting with oxygen and the products are co2 gas and water vapor.
00:31
Now, let's balance this equation.
00:34
Now here left side, one carbon atom, right side of the arrow, one carbon atom.
00:43
That's fine.
00:44
Now let's count hydrogen atoms, 3 plus 1, 4.
00:48
And on the product side, only 2 hydrogen atoms.
00:51
So to balance it less place to here.
00:54
Now on the product side, 2 oxygen atoms here and 2 here, total 4 oxygen atoms.
01:01
But here on the reactant side, 2 oxygen atoms here.
01:05
So to balance, let's place two here.
01:08
Now we have two oxygen atoms here and two oxygen atoms here.
01:14
Total four oxygen atoms on the reactant side.
01:17
Also four oxygen atoms on the product side...