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CBSE - XI Science - Chemistry - The s-Block Elements

What is lattice enthalpy?

Asked by suvrat sharma 2nd February 2011, 12:00 AM
Answered by Expert


Dear Student

Lattice enthalpy and lattice energy are commonly used as if they mean exactly the same thing - you will often find both terms used within the same textbook article or web site, including on university sites.

In fact, there is a difference between them which relates to the conditions under which they are calculated. However, the difference is small, and negligible compared with the differing values for lattice enthalpy that you will find from different data sources.

The lattice formation enthalpy is the enthalpy change when 1 mole of solid crystal is formed from its scattered gaseous ions. Lattice formation enthalpies are always negative.

We hope that clarifies your query.




Answered by Expert 3rd February 2011, 9:35 AM

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