Effect of temperature on a combustion reaction #chemistry #chemicalreaction #combustion

A combustion reaction is conducted at two different temperatures. NOTE: It is also very likely that the warmer bottle contains more alcohol vapor than the cooler bottle, due to the higher vapor pressure of the liquid in the former over the latter.

[SerfOfTheYear]

My science teacher showed this experiment in class before. The thing is, we were all working on a paper and he just did it after our lesson for fun. It was random, but exciting!

[ishouldhidemynamelmao]

If it's cold doesn't that mean there would be less vapor inside of there to burn? Rather than the temperature affecting the combustion reaction, there is just less fuel to burn thus a slower(tamer?) Reaction?

[gyromurphy]

You should show people what mixing equal parts Potassium permanganate and vegetable glycerin does. It's actually a very valuable tool for survival situations. Starts a fire no matter what!

[OttyYolf]

I like the anthropomorphic snow leopard in a lab coat on his lab coat.

[clutchyfinger]

They stop engineers from cooling down fuel too much because you get more performance and better reliability. It actually came up recently in F1 with Red Bull.

[usingthecharlim]

The reaction rate isn't the difference. 20c difference doesn't matter when it's fire. The important factor is vapour pressure. The vapour pressure of a liquid strongly depends on temperature, so the warm one had roughly double the fuel.

[OsiDio]

The cosmosphere in Hutchison Kansas does this in a classroom. The jug is attached to a string going across the room. It's dope af

[lilmike]

Deisel fuel is more volatile when heated. Cold deisel is stubborn to light when cold but when heated it sparks right up. When heated to high temp it will flash. Gasoline however is the opposite. You may have already noticed that your gasoline engines get better gas mileage in the summer than in winter. However, as strange as it may seem, cold gasoline makes more horsepower than gas at ambient temperature. Your gasoline will always match the temperatures of it's environment. Pro drag racers actually have differing set ups that cools the gasoline before it goes into the combustion chambers. Some crude, some quite elaborate. A simple set up that can be done in your garage involves tubing and a coffee can that can hold ice. Dry ice works best. It's only a slight difference but in drag racing competition gets fierce. When a tenth of a second can decide who wins big $$ any advantage is welcomed.

[arpitd]

I have done this many times in my room feels so satisfying

[leroyjenkins]

You should do this again, but one in a cold environment and the other in a hot one. Might yield a good model of Le Chatelier's principle

[duncanvincent]

Nope. A 20c differences no difference to the rate of reaction.
It DOES affect the amount of isopropyl that evaporates.

[warp.routine]

So now I'm wondering if exothermic reactions are affected by relatively minor differences in ambient temperature (+/- 100°C). It seems logical that in this case, a warmer ambient temperature would slow the reaction since there is less thermal energy potential between the reaction and atmosphere. However I bet it's not that straightforward...

[EphemeralProductions]

I remember my chem teacher showing us this in High school. :)

[denwin]

I am a backyard scientist (hobby )
I was trying the same experiment with my isopropyl alcohol I had some containers because my uncle was in printing press and they need isol alcohol
By mistakely I true or claim match stick on the container ( my foolishness) which was empty
it was and i was like scared and then i was happy of that rocket sound like it was launching
So i myself a mad scientist did this 3 more times and after a day. I did the same thing but with excitement I put the match sticker and saw it with my own eyes by entering my eyes in the cans neck.

My fricking half of my face was burned, half of my hair burnt, eyebrows, moustache and beared burned, but thank God due to reflex action my eyes 👁️ were saved.
I had a new ve scolding with my parents and i realised one thing that even if u r a mad scientist. Never underestimate the power of 🔥. Especially when excitement goes out of control.

I didn't take any medication for burns ( it was first degree burn ) but i realised another thing. After burns. Don't apply water and ice (because it won't stop the cooking process). Use potato or vegetable paste and apply to soothen pain . After 5 days apply silver nitrate gel. From pharmacy and apply it if burn is 1st degree only. And don't do like me. Consult a doctor. It might be a life saver.

[darkstatehk]

I love watching Tim Robbins doing science experiments! 😁

[kingshanaman]

The cold one, due to the low temperature, has a higher concentration of isopropanol molecules at any given area and thus lesser oxygen molecules. Remember Oxygen is needed for combustion. Therefore the reaction is slower due to the lower O2 concentration.

[gwynbleidd]

isn't this just a variation of the barking dog experiment?

[xjww]

Why do alcohol dragsters run faster when it's cold outside then?

[theniqabiblogger]

Nice keep posting thumbs up to you guys from Australia

[danielbickford]

I think I remember running across somewhere as a rule of thumb that for every 10° warmer a substance is the reaction rate doubles. I'm not sure how accurate it it is, but it sounds almost believable.