Navigate

At 298 K the enthalpy of formation of liquid water is -285.9 kJ/mol

At 298 K the enthalpy of formation of liquid water is -285.9 kJ/mol and that of steam -242.8 kJ/mol. The enthalpy of vapourisation of water is

Options

(a) 43.1 kJ/mol
(b) -43.1 kJ/mol
(c) 242.8 kJ/mol
(d) -242.8 kJ/mol

Correct Answer:

43.1 kJ/mol

Explanation:

ΔH(vap) = -242.8 – (-285.9) = 43.1 kJ/mol.

AMU2003
admin:

Related Questions

  1. Acetamide and ethylamine can be distinguished by reacting with
  2. The reaction in which hydrogen peroxide acts as a reducing agent is
  3. The volume of 3.0 N-H₂O₂ strength is
  4. The reagent commonly used to determine hardness of water titrimetrically is
  5. A bromoalkane contains 35% carbon and 6.57% hydrogen by mass. Calculate the empirical