If gasoline turns from liquid to a high pressure gas

In summary, gasoline turns from liquid to a high pressure gas through vaporization, which occurs when it is heated. While the high pressure gas can be dangerous if not handled properly, it can also turn back into a liquid through condensation. This high pressure gas is crucial for engines as it powers them through the expansion of gas when ignited. Without this process, the engine will not be able to produce the necessary power for a vehicle or machinery to function.
  • #1
Qaiphyx
92
0
in internal combustion engines, how do they run hydrogen in these engines like the BMW hydrogen car when hydrogen combusts into H2O?
 
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  • #2
Its not about the phase transition but the chemical reaction that makes it work.
 
  • #3
Combustion heat makes the gas which is introduced into the engine expansion. At that moment the engine generates work. Q=m Cp del T + del (PV). And del (PV) makes work. Ideal work is like this.
W= Int (V_int to V_final) P dV
 
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1. What causes gasoline to turn from liquid to a high pressure gas?

Gasoline turns from liquid to a high pressure gas due to a process called vaporization. When gasoline is heated, the molecules gain enough energy to break free from their liquid form and become a gas.

2. Is the high pressure gas created by gasoline dangerous?

The high pressure gas created by gasoline can be dangerous if not handled properly. Gasoline vapors are highly flammable and can ignite easily, so it is important to follow safety precautions when handling gasoline.

3. Can gasoline turn back into a liquid after becoming a high pressure gas?

Yes, gasoline can turn back into a liquid after becoming a high pressure gas. This process is called condensation and occurs when the gas cools down and its molecules lose enough energy to reform into a liquid state.

4. How does the high pressure gas from gasoline affect engines?

The high pressure gas from gasoline is essential for engines to function properly. When the gasoline is ignited, the gas expands and pushes against the pistons, causing them to move and power the engine.

5. What happens if gasoline does not turn into a high pressure gas in an engine?

If gasoline does not turn into a high pressure gas in an engine, the engine will not be able to produce the necessary power to run a vehicle or machinery. This can be caused by various factors such as a lack of spark or insufficient compression in the engine.

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