# How do you balance CH3OH + O2 -- CO2 + H2O?

##### 2 Answers

The balanced equation is

#### Explanation:

You follow a systematic procedure to balance the equation.

Start with the unbalanced equation:

A method that often works is first to balance everything other than

Another useful procedure is to start with what looks like the most complicated formula.

The most complicated formula looks like

We start with

**Balance #"C"#:**

We have

**Balance #"H"#:**

We can't balance

We have

**Balance #"O"#**:

We have fixed

**Uh, oh! Fractions!**

We start over, this time doubling all the coefficients.

Now we can balance

Every formula now has a coefficient. We should have a balanced equation.

Let's check.

All atoms balance. The balanced equation is

#### Explanation:

- First try to balance atoms other than O and H. So first balance the C atoms.

#2CH_3OH# #+ O_2# #rarr 2CO_2 +H_2O# . - Then balance the H atoms, as no. of H atoms is less than no. of O atoms.

#2CH_3OH# #+ O_2# #rarr 2CO_2 +4H_2O# . - Now, balance the remaining O atoms.

#2CH_3OH# #+3 O_2# #rarr 2CO_2 +4H_2O# .

Now, check that the no. of all individual atoms in L.H.S and R.H.S are equal.