# Problem: Use the data given below to construct a Born-Haber cycle to determine the lattice energy of KBr.       ΔH°(kJ) K(s) → K(g)                                             89 K(g) → K+(g) + e-                                   419 ½ Br2(l) → Br(g)                                      96 Br(g) + e- → Br-(g)                                 -325 K(s) + ½ Br2(g) → KBr(s)                       -394   A) -885 kJ B) -673 kJ C) +367 kJ D) -464 kJ E) +246 kJ

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###### Problem Details

Use the data given below to construct a Born-Haber cycle to determine the lattice energy of KBr.

ΔH°(kJ)

K(s) → K(g)                                             89

K(g) → K+(g) + e-                                   419

½ Br2(l) → Br(g)                                      96

Br(g) + e- → Br-(g)                                 -325

K(s) + ½ Br2(g) → KBr(s)                       -394

A) -885 kJ

B) -673 kJ

C) +367 kJ

D) -464 kJ

E) +246 kJ

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Born Haber Cycle concept. You can view video lessons to learn Born Haber Cycle. Or if you need more Born Haber Cycle practice, you can also practice Born Haber Cycle practice problems.

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Our tutors rated the difficulty ofUse the data given below to construct a Born-Haber cycle to ...as medium difficulty.

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Based on our data, we think this problem is relevant for Professor Tang's class at USF.