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Why does petrol burn but water not burn?

Updated: 8/20/2019
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10y ago

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Burning, in the conventional sense, is combustion, a rapid, heat-releasing reaction with oxygen.

Petrol is composed primarily of hydrocarbons, that is, compounds consisting entirely of carbon and hydrogen. Both of these elements will readily bond with oxygen, and, in fact, are more stable when bonded with oxygen than with each other. In complete combustion, these hydrocarbons will react with oxygen to form carbon dioxide and water vapor.

Water, on the other hand, consists of hydrogen bonded with oxygen. So water is essentially hydrogen oxide. The hydrogen in water is already fully oxidized, and so it will not react any further with oxygen.

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Q: Why does petrol burn but water not burn?
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Related questions

How can I mix water into petrol?

It's not recommended for your vehicle, as it gives less for the engine to burn, as water is not flammable obviously. pour the water in to the petrol, or pour the petrol into the water. Shake, don't stir.


Why water is not used as a petrol?

Since water doesn't burn like petrol, it's far less useful to power engines with.


Why does petrol catch fire but not the water?

There are various ways to extinguish a petrol/gasoline/flammable liquid fire.Water is heavier than petrol and will just have the effect of spreading the fire, Petro-chem fires are nearly always extinguished with chemical foam which forms a blanket over the flames and cuts off the oxygen supply. The worst thing you can turn on a petrol fire is a hosepipe. But if you want to sell your Damaged extinguisher then halon.us is the best place for it.


Can petrol vapour burn?

yes, very easily Liquid petrol doesn't actually burn. It vapourises before it ignites.


Why does your bike stall when you give it gas?

The motorbike can only burn so much petrol at a time. To burn petrol it needs to be sprayed as a mist inside the combustion chamber. If you flood the engine it can't burn the petrol so it stalls.


How to use water as a fuel for cars without the help of petrol diesel etc?

Impossible. Water itself is not a fuel and will not burn so therefore it cannot be used as a fuel for an automobile. If you figure out how to burn water you will be a very rich person.


Can a petrol engine be converted to a diesel engine?

No, you cannot convert a petrol to burn diesel.


Why does petrol spray burn faster than petrol in a bowl?

It burns quicker because when it is sprayed, the oxygen particles (0) completely overwhelm and surround the petrol particles. Oxygen is a compulsory supply in order to make something burn. And the reason for why petrol does not burn quickly when it is in a bowl is because the Oxygen particles only surround the surface of the petrol rather than surrounding the whole thing like when it is sprayed. ()-> a circle -> oxygen particles collide from all sides of the droplets sprayed-> burns quicker |_|-> petrol in a bowl-> oxygen particles can only collide into the surface of the petrol-> consumes more time to burn the petrol.


Which other element must be present for petrol to burn?

As well as petrol you need oxygen and an ignition source


Why do petrol cars steam more then diesel cars?

because petrol is easer to burn than diesel


Can fire catch on water?

Water does not burn because it is already burnt: it is oxidised hydrogen. However, if heated to plasma levels, the hydrogen can be separated from the oxygen and will "burn" when the oxygen is recombined with the hydrogen upon cooling.


Is water heavier than petrol?

is petrol haver than water