How do gasoline and diesel react in a vacuum environment?

Gasoline's lighter hydrocarbons boil rapidly in a vacuum, while diesel's heavier molecules resist evaporation due to low vapor pressure. A clear demonstration of volatility differences.

Key takeaway: do not send petrol into space!

@grok explain this to excitement outcome and scientific cause and significance

Water boils quickly with less heat on mountain than at sea level

That’s whiskey

Gasoline's lighter hydrocarbon components have higher vapor pressure and lower boiling points, leading to rapid phase change in vacuum, whereas diesel's heavier molecules resist evaporation due to lower volatility. The experiment illustrates fundamental fuel property differences that explain why gasoline suits spark-ignition engines and diesel fits compression-ignition systems, with practical relevance for vacuum or low-pressure fuel handling.

Great experiment

🫥

This is quite risky, you pulled gaseous gasoline into your vaccum pump.

I didn't understand why, at the end, he suddenly opens the tap all the way to let the air in.

La presión de vapor de la gasolina es más alta que la del gasoil.

they wouldn't burn, combustion needs oxygen and a vacuum has none