The heat of formation of water is given by : — Chemistry | Mockzy

EasyChemistry

+4 / -1

The heat of formation of water is given by :

H₂(g) + 1/2 O₂(g) → H₂O(l) ; ΔH = −68.3 kcal

2H₂(g) + O₂(g) → 2H₂O(l) ; ΔH = −136.6 kcal

H₂(g) + 1/2 O₂(g) → H₂O(g) ; ΔH = −86 kcal

H₂(g) + 1/2 O₂(g) → H₂O(l) ; ΔH = +68.3 kcal

For the spontaneity of a reaction , which is true-

The occurrence of reaction is impossible if

More from Thermodynamics

Which of the following is correct option for free expansion of an ideal gas under adiabatic conditio

Under the same conditions how many ml of 1 M KOH and 0.5 M H₂SO₄ solutions respectively when mixed f

1 gm H₂ gas at S.T.P. is expanded so that volume is doubled. Hence work done is -

The lattice enthalpy and hydration enthalpy of four compounds are given below – Compound Lattice ent

Standard enthalpies of formation of O₃, CO₂, NH₃ and HI are 142.2, −393.2, −46.2 and +25.9 kJ mol⁻¹

Consider the following reactions at 1000°C - I. Zn(s) + 1/2 O₂(g) → ZnO(s); ΔG° = −360 kJ mol⁻¹ II.

Full-length mock tests with detailed analytics, rank, and percentile.