Use the References to access impertant values if needed for this qstios Calculat

Question

Use the References to access impertant values if needed for this qstios Calculate the lattice energy of AgCKs) using the following thermodynamic data (all data is in kJ/mol). Note that the data given has been perturbed, so looking up the answer is probably not a good idea. Ag(s) AHublimation- 265 kJ/mol Agíg) lonization energy-711 kJ/mol CI-CKg) Bond energy 223 kJ/mo CIg) Electron affinity- -369 kJ/mo kJ/mol Do you expect this value to be larger or smaller than the lattice energy of AgBr? Submit Answer Retry Entire Group 9 more group attempts remaining Previous

Explanation / Answer

1.

deltaH0f = deltaHsub + deltaHIE + (1/2)deltaHdiss + deltaHEA + U

U = Lattice energy = - 147 - 265 - 711 - (1/2) 223 + 369

U = - 865.5 kJ/mol

As the size of anion increases ionic will decrease . Hence this value higher than the lattice energy of AgBr.

2.

deltaH0f = deltaHsub + deltaHIE + (1/2)deltaHdiss + deltaHEA + U

U = Lattice energy = - 224 - 161 - 569 - ( 223 / 2 ) + 369

U = - 696.5 kJ/mol

As the size of anion increases ionic will decrease . Hence this value higher than the lattice energy of TlBr.

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