Combustion Of Hydrocarbons

Question 1

What do hydrocarbons produce when burnt?

Answer 1

Carbon dioxide and water

Question 2

What are best hydrocarbons for fuels in terms of size?

Answer 2

Smaller molecules

Question 3

What us a use of methane, Propane and octane?

Answer 3

Methane=bunsen burner
Propane=camping gad
Octane=fuel in cars

Question 4

How do you test for the products of complete combustion?

Answer 4

You burn the hydrocarbon making the gas go in a tube, water condenses in a U-tube where it will find anhydrous copper sulfate which will go from white to blue in presence of water, the carbon dioxide (not condensed in the U-tube) will go another little tube found on the other side of the U-tube which will go in atest tube with lime water inside, the lime water goes from colourless, to cloudy, white or milky in the presence of CO2

Question 5

What is incomplete combustion?

Answer 5

When a combustion reaction in which there is not enough oxygen for the fuel to burn completely

Question 6

What will be formed instead of carbon dioxide in a incomplete combustion?

Answer 6

Carbon monoxide

Question 7

What if oxygen is in extremely small to no quantity?

Answer 7

Carbon wool is formed instead creating a carbon (soot)

Question 8

What is the problem with soot since it’s not poisonous?

Answer 8

It is a pollutant