Practice question
Question
Calculate Δ H for the reaction C(s) + 2H₂(g) → CH₄(g) given: CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l), Δ H = -890.3 kJ/mol; C(s) + O₂(g) → CO₂(g), Δ H = -393.5 kJ/mol; H₂(g) + (1/2)O₂(g) → H₂O(l), Δ H = -285.8 kJ/mol.
Explanation
Reverse first: Δ H = 890.3 kJ. Second: Δ H = -393.5 kJ. Third (×2): Δ H = -571.6 kJ. Add: 890.3 - 393.5 - 571.6 = -74.8 kJ/mol.
Related blogs
Guides and insights connected to this topic
Human Astrovirus- An Introduction
Structure of Human Astrovirus Human astrovirus (virus causing gastroenteritis in humans) falls under Astroviridae (virus family) and genus M...
Crimean-Congo Hemorrhagic Fever Virus (CCHFV): Transmission, Replication, Pathogenesis, Clinical Features, Diagnosis, Treatment, and Prevention
Structure of Crimean-Congo Hemorrhagic Fever Virus Crimean-Congo hemorrhagic fever virus (– causative agent of CCHF) falls under the family...
Molecular Biology and Clinical Aspects of Lassa Virus
Structure of Lassa Virus The virus is a single-stranded RNA virus (RNA virus – virus whose genetic material is RNA, not DNA) belonging to th...