Calculate the standard enthalpy of combustion of a methane sample by using the standard enthalpies of formation.

Write the equation and balance it. CH4 + 2O2 --> CO2 + 2H2O Assign the enthalpies of formation and the sign of the energy value with the corresponding molecule (Will demonstrate my technique if needed). e.g. C(s) + 2H2(g) --> CH4(g) Delta H(f) = -74.87

Generate an equation will all assigned values and the single unknown Delta H(combustion/c). Rearrange for Delta H(c). Answer is - 890.63 KJ/mol.

Answered by Axel C. Chemistry tutor

24659 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

When aqueous barium chloride is added to a solution containing sulfate ions a white precipitate is formed. i)Write the ionic equation for the formation of this precipitate.


24.3cm^3 of 0.02moldm-3 KMnO4 reacted with 20cm^3 of iron (II) solution. Calculate the molarity of the iron (II) solution.


Explain the 3 pieces of evidence that disprove Kekule's model of benzene.


Describe the Structure and Bonding of Benzene


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences