Combustion reactions (12.2)

Question 1

Why don’t alkanes commonly react with reagents?

Answer 1

-C-C and C-H sigma bonds are strong

-C-C bonds are non polar

-C-H’s electronegativity can be considered non-polar

Question 2

What products does the combustion of alkanes make?

Answer 2

Carbon dioxide and water

Question 3

What is needed for complete combustion?

Answer 3

A plentiful supply of oxygen

Question 4

If combustion is incomplete what products are made?

Answer 4

Carbon Monoxide and Water

Question 5

What are the rules for balancing alkane’s combustion equations?

Answer 5

-The number of carbons in the alkane is the number of CO2’s produced

-Half the number of hydrogens in the alkane is the number of H2O’s produced

-The balancing number on O2 is half the number oxygens on the product’s side