what is these terms ?
1.enthalpy of reaction
2.enthalpy of combustion
3.enthalpy of fusion
4.enthalpy of vaporization
5.enthalpy of sublimation
6.enthalpy of solution
7.enthalpy of dilution.
Answers
Enthalpy of reaction
The amount of heat evolved or absorbed when the number of moles of reactants react completely to give the products as given by the balance chemical equation.
Enthalpy of combustion
The change in enthalpy when one mole of a substance is completely burnt in oxygen.
Enthalpy of fusion
The change in enthalpy when one mole of a solid is completely converted into liquid state at its melting point.
Enthalpy of vaporization
The change in enthalpy when one mole of a liquid is completely converted into its vapours and its boiling point.
Enthalpy of sublimation
The change in enthalpy when one mole of a solid is directly converted into vapours at sublimation temperature.
Enthalpy of solution
the change in enthalpy when 1 mole of a substance is dissolve in excess of water so that for the dilution does not evolve in heat change.
Enthalpy of dilution
the change in enthalpy when a solution containing a mole of solute is diluted from one concentration to another.
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Answer:
heya mate..
Explanation:
The standard enthalpy of reaction (denoted ΔHr⦵) is the enthalpy change that occurs in a system when matter is transformed by a given chemical reaction, when all reactants and products are in their standard states.
enthalpy of combustion specifically refers to the reaction where one mole of the compound in question completely combines with oxygen gas.
The enthalpy of vaporization, (symbol ∆Hvap) also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance, to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
The enthalpy of fusion of a substance, also known as (latent) heat of fusion, is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.
The enthalpy of sublimation, or heat of sublimation, is the heat required to change one mole of a substance from solid state to gaseous state at a given combination of temperature and pressure, usually standard temperature and pressure (STP).
The enthalpy of solution, enthalpy of dissolution, or heat of solution is the enthalpy change associated with the dissolution of a substance in a solvent at constant pressure resulting in infinite dilution. The enthalpy of solution is most often expressed in kJ/mol at constant temperature.
The heat of dilution, or enthalpy of dilution, refers to the enthalpy change associated with the dilution process of a component in a solution at a constant pressure.
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