Topic 8 key definitions Flashcards

1
Q

Standard enthalpy change of reaction.

A

The enthalpy change measured at 100kPa and usually 298K when one mole of substance reacts.

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2
Q

Standard enthalpy change of combustion.

A

The enthalpy change measured at 298K and 100KPa when one mole of substance is completely burned in oxygen.

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3
Q

Standard enthalpy change of neutralisation.

A

The enthalpy change at 100Kpa and 298K when one mole of water is produced by the neutralisation of an acid with an alkali.

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4
Q

Standard enthalpy change of formation.

A

The enthalpy measured at 100kPa and usually 298K when one mole of substance is formed from elements in their standard states.

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5
Q

Hess’s law?

A

The enthalpy change of a reaction is independent of the route taken in converting the reactants into products, providing conditions stay constant.

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