Bond Enthalpy

JEE Main Chemistry · Chemical Thermodynamics · 7 questions, latest first

• The heat of atomisation of methane and ethane are ' x ' kJ mol^-1 and ' y ' kJ mol^-1 respectively. The longest wavelength (λ) of…202624 January, Shift 2 · Q54
• Consider the following data: Δ_f H^ (methane, g )=-X kJ mol^-1 Enthalpy of sublimation of graphite =Y kJ mol^-1 Dissociation…202621 January, Shift 2 · Q54
• Resonance in X_2 Y can be represented as The enthalpy of formation of X_2 Y(X ≡ X(g)+1/2 Y=Y(g) → X_2 Y(g)) is 80 kJ mol^-1. The…20258 April, Shift 2 · Q73
• Given: Δ H^_sub [C (graphite) ]=710 kJ mol^-1; Δ_C-H H^ =414 kJ mol^-1; Δ_H-H H^ =436 kJ mol^-1; Δ_C=C H^ =611 kJ mol^-1 The Δ…20253 April, Shift 1 · Q71
• The formation enthalpies, Δ H_f^ for H_(g) and O_(g) are 220.0 and 250.0 kJ mol^-1, respectively, at 298.15 K, and Δ H_f^ for H_2…202528 January, Shift 1 · Q72
• The enthalpy of formation of ethane (C_2 H_6) from ethylene by addition of hydrogen where the bond-energies of C-H, C-C, C=C, H-H…20244 April, Shift 1 · Q83
• A_2+B_2 → 2 AB. Δ H_f^0=-200 kJ mol^-1 AB, A_2 and B_2 are diatomic molecules. If the bond enthalpies of A_2, B_2 and AB are in…202313 April, Shift 1 · Q83