Question

Which of these compounds, on complete combustion of one mole, will release the greatest amount of energy? a ch3ch2ch2oh b ch3ch2ch3 c ch3ch2co2h d ch3coch3?

Answer 1

The answer is B.

Compound B is propane.

Combustion involves reaction with oxygen.

Combustion converts the C-c and C-H bonds to water and carcinogens (iv) oxide.

Compared to the other substances, Compound B has the largest number of C-H and C-C bonds to be converted.

The enthalpy of formation of water and Carbon(iv) oxide is higher.

In the other compounds they have oxygen meaning thay are partly combusted hence the energy produced is less that of B.

Answer 2

Answer:

Explanation:

The answer is B.

Compound B is propane.

Combustion involves reaction with oxygen.

Combustion converts the C-c and C-H bonds to water and carcinogens (iv) oxide.

Compared to the other substances, Compound B has the largest number of C-H and C-C bonds to be converted.

The enthalpy of formation of water and Carbon(iv) oxide is higher.

In the other compounds they have oxygen meaning thay are partly combusted hence the energy produced is less that of B.