Bond energies of few bonds are given below : Cl Cl = 242.8 kJ mol –1 , H Cl = 431.8 kJ…
Chemistry · Class 11 · CBSE — Thermodynamics
Bond energies of few bonds are given below :
Cl Cl = 242.8 kJ mol–1, H Cl = 431.8 kJ mol–1, O H = 464 kJ mol–1, 
= 442 kJ mol–1
Using the B.E., calculate ΔH for the following reaction, 2Cl2 + 2H2O → 4HCl + O2
- 906 kJ mol–1
- 172.4 kJ mol–1
- 198.8 kJ mol–1
- 442 kJ mol–1
Answer
(C) 198.8 kJ mol –1
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The enthalpy of formation of ammonia when calculated from the following bond energy data is ( B . E . of N –…
- Δ H for the reaction, OF 2 + H 2 O → O 2 + 2HF ( B . E . of O F, O H, H F and O O are 44, 111, 135 and 119…
- For a reaction, P + Q → R + S . The value of Δ H ° is –30 kJ mol –1 and Δ S is –100 J K –1 mol –1 . At what…
- Which of the following reactions will have the value of enthalpy of neutralisation as –57.1 kJ mol –1 ?
- A reaction is at equilibrium at 100°C and the enthalpy change for the reaction is 42.6 kJ mol –1 . What will…
- For reversible reaction : X ( g ) + 3 Y ( g ) 2 Z ( g ) ; Δ H = – 40 kJ Standard entropies of X , Y and Z are…
- What will be the amount of heat evolved by burning 10 L of methane under standard conditions? (Given heats of…
- For a reaction, 2 K ( g ) + L ( g ) → 2 M ( g ) ; Δ U ° = –10.5 kJ and Δ S ° = – 44.1 J K –1 . Calculate Δ G…
More Thermodynamics questions · Browse all practice questions