Why is Ethanol Highly Flammable?

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In summary, the chemical Ethanol is highly flammable due to its ability to rapidly react with oxygen, a key condition for a substance to be considered flammable. This is known as reaction kinetics and is what sets Ethanol apart from substances like iron, which also react with oxygen but at a slower rate, therefore not producing a flame.
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Homework Statement



Why is Ethanol so flammable?


Homework Equations


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The Attempt at a Solution



I know the chemical is highly flammable, but why is it? Can't find anywhere on the web why it is so flammable.

Thanks!
 
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  • #2
There are several conditions that have to be meet for the substance to be "flammable" - can you think what they are?

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  • #3
err? It has to react with Oxygen? Sorry, I'm brainless right now lol. Please tell me lol :D
 
  • #4
Think about reaction kinetics.

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  • #5
Hey? So basically, why is Ethanol flammable, briefly.
 
  • #6
It doesn't just have to react with oxygen...

Iron reacts with the oxygen in air, but we do not call that a flame, because it doesn't happen fast enough.
 

1. Why is ethanol flammable?

Ethanol is flammable because it has a low flash point and a high vapor pressure, making it highly volatile. This means that it can easily ignite and produce a flame when exposed to a spark or heat source.

2. What makes ethanol more flammable than other alcohols?

Compared to other alcohols, ethanol has a lower boiling point, which means it can vaporize more easily. It also has a higher vapor pressure, which means it can produce more flammable vapors at lower temperatures. Additionally, ethanol has a higher energy density, making it more likely to catch fire and burn more intensely.

3. Can ethanol catch fire on its own?

No, ethanol cannot catch fire on its own. It needs a source of ignition, such as a spark or flame, to start the combustion process. However, once ignited, it can sustain its own flame due to its high vapor pressure and energy density.

4. Is ethanol always flammable?

Yes, ethanol is always flammable. However, the degree of flammability can vary depending on the concentration of ethanol in a solution. The higher the concentration of ethanol, the more flammable it becomes.

5. How does ethanol's flammability affect its use?

Ethanol's flammability is an important factor to consider when using it in various applications. It is commonly used as a fuel source in vehicles and as a solvent in industrial processes. The high flammability of ethanol requires special handling and safety precautions to prevent accidents and fires.

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