Is the Calculation of Lattice Energy Correct at Time 2:40 in This Video?

Thread starter gracy
Start date Apr 23, 2015
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Calculation Energy Lattice

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The discussion centers on the comparison of lattice energy between Fe2O3 and NaCl, specifically addressing a claim made in a video at the 2:40 mark. One participant argues that the lattice energy of Fe2O3 should be significantly greater than that of NaCl, estimating it to be 36 times higher when not accounting for ionic radius. The reasoning provided highlights the importance of considering the total charge of the ions in Fe2O3, which includes a charge of -2 from oxygen and +3 from iron, leading to a total charge of 6 per formula unit. This calculation supports the assertion that the lattice energy for Fe2O3 is indeed higher than that of NaCl.

Apr 23, 2015

gracy

In the following video,is he right at time at time 2:40

I don't think so .Because lattice energy of fe2o3 should be 36 times greater than Nacl (without considering radius factor)

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Apr 23, 2015

gracy

I think I have got my answer.He is right.in fe2o3 ,we will have to take product of charge per ion which is 6 (-2 on oxygen and +3 on iron)

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