Use the Data Given Below to Construct a Born-Haber Cycle

question 143

Multiple Choice

Use the data given below to construct a Born-Haber cycle to determine the electron affinity of Br. DH°(kJ)
K(s) → K(g) 89
K(g) → K⁺(g) + e⁻ 419
Br₂(l) → 2 Br(g) 193
K(s) + Br₂(g) → KBr(s) -394
KBr(s) → K⁺(g) + Br⁻(g) 674

• A) -885 kJ
• B) -325 kJ
• C) +367 kJ
• D) -464 kJ
• E) +246 kJ

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