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The enthalpy of formtion of H2O (l) is -280.70 kj/mol and enthalpy of neutrlisation of a strong acid and strong base is -56.70 kj/mol what is the enthalpy of formation of OH-.

The enthalpy of formtion of H2O (l) is -280.70 kj/mol and enthalpy of neutrlisation of a strong acid and strong base is -56.70 kj/mol
what is the enthalpy of formation of OH-.

Grade:12

1 Answers

SAGAR SINGH - IIT DELHI
879 Points
10 years ago

Dear student,

Using Hess's Law we can calculate reaction enthalpies for a variety of reactions using tables of known enthalpies

Many experimentally determined enthalpies are listed by the type of process

  • D
  • H for converting various liquids to the gas phase are listed in tables of enthalpies of vaporization
  • D
  • H for melting solids to liquids are listed in tables of enthalpies of fusion
  • D
  • H for for combusting a substance in oxygen are listed in tables of enthalpies of combustion

The enthalpy change associated with the formation of a compound from its constituent elements is called the enthalpy of formation (DHf )

Conditions which influence enthalpy changes include:

  • temperature
  • pressure
  • state of reactants and products (s, g, l, aq)

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