Write the balanced equation for the reaction that occurs when methanol, cheoh () is burned in air. what is the coefficient of oxygen in the balanced equation? a) 1 b) 2 c) 3 d) 4 e) 3/2

The balanced equation for methanol when is burned in the air, is

CH3OH + O2 >  3/2 CO2  +2 H2O and as you see coefficient of oxygen is 3/2

Explanation:

When you always burn something you are doing combustion. The reactives are your compound + O2, and as products you have CO2 and H2O

The coefficient of oxygen is 3 ( option c)

Explanation:

Methanol = CH3OH

The process of burning = adding oxygen (O2)

In this process methanol will be consumed and CO2 and H2O will be produced.

CH3OH + O2 → CO2 + H20

First we'll balance on both sides all H-atoms: left we have 4x H and on the right side we have 2x H so we have to multiply the right side ( H2O) by 2.

This gives us:   CH3OH + 02 → CO2 + 2 H2O

Since we have now, 3x O on the left side and 4x O on the right side, it looks like we don't have to multiply H2O on the right side by 2 but by 4, and then we multiply CH3OH on the left side by 2

This gives us: 2 CH3OH + O2 → CO2 + 4H2O

Now we have on both side 8x H

On the left side we have 2x C, and 1x C on the right side. So we have to multiply CO2 on the right side by 2

This gives us: 2 CH3OH + O2 → 2 CO2 + 4H20

Now we have on both side 8x H and 2x C

On the left side we have 4x O but on the right side we have 8x O

We have to multiply O2 on the left side by 3, to equal this.

So finally, we'll have

2 CH3OH + 3O2 → 2 CO2 + 4H2O

This shows us that the coefficient of oxygen is 3 ( option c)

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