Write the formation equation for CH₄ from the standard states of its elements and give its standard enthalpy of formation

• A. C (g) + 2 H₂ (g) → CH₄ (g) ΔH°_f = -74,850 kJ/mol
• B. C (s) + 2 H₂ (g) → CH₄ (g) ΔH°_f = -74,850 kJ/mol
• C. C (s) + H₂ (g) → CH₄ (s) ΔH°_f = -74,850 kJ/mo
• D. C (s) + 4 H (g) → CH₄ (g) ΔH°_f = -74,850 kJ/mol

Answer: (B)