Question

18. The combustion of methanol is shown by the following equation: 2CH3OH(l) + 3O2(g) -> 2CO2(g) + 4H2O(g) Given the data which follows: a. Find the heat of reaction for the equation above. (3 marks) b. State the molar heat of combustion of methanol. (1 mark) c. State whether the reaction is endothermic or exothermic. (1 mark) C(s) + O2(g) -> CO2(g) + 393 kJ H2(g) + 1/2O2(g) -> H2O(g) + 242 kJ C(s) + 2H2(g) + 1/2O2(g) -> CH3OH(l) + 638 kJ

          18. The combustion of methanol is shown by the following equation:
2CH3OH(l) + 3O2(g) -> 2CO2(g) + 4H2O(g)
Given the data which follows:
a. Find the heat of reaction for the equation above. (3 marks)
b. State the molar heat of combustion of methanol. (1 mark)
c. State whether the reaction is endothermic or exothermic. (1 mark)

C(s) + O2(g) -> CO2(g) + 393 kJ

H2(g) + 1/2O2(g) -> H2O(g) + 242 kJ

C(s) + 2H2(g) + 1/2O2(g) -> CH3OH(l) + 638 kJ

18. The combustion of methanol is shown by the following equation:
2CH3OH(l) + 3O2(g) -> 2CO2(g) + 4H2O(g)
Given the data which follows:
a. Find the heat of reaction for the equation above. (3 marks)
b. State the molar heat of combustion of methanol. (1 mark)
c. State whether the reaction is endothermic or exothermic. (1 mark)

C(s) + O2(g) -> CO2(g) + 393 kJ

H2(g) + 1/2O2(g) -> H2O(g) + 242 kJ

C(s) + 2H2(g) + 1/2O2(g) -> CH3OH(l) + 638 kJ

Added by Xavier G.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Supreeta N

04/21/2023

Step 1

First, we need to find the heat of reaction for the given equation. We can do this by using Hess's Law, which states that the total enthalpy change for a reaction is the sum of the enthalpy changes for each step in the reaction. The given reactions are: Show more…

Show all steps

Thanks for your feedback!

The combustion of methanol is shown by the following equation: 2CH3OH(l) + 3O2(g) -> 2CO2(g) + 4H2O(g) Given the data which follows: a. Find the heat of reaction for the equation above. (3 marks) b. State the molar heat of combustion of methanol. (1 mark) c. State whether the reaction is endothermic or exothermic. (1 mark) C(s) + O2(g) -> CO2(g) + 393 kJ H2(g) + 1/2O2(g) -> H2O(g) + 242 kJ C(s) + 2H2(g) + 1/2O2(g) -> CH3OH(l) + 638 kJ