Compound EX4 Reacts with Y2 Giving Two Products: EX3Y and XY

question 75

Multiple Choice

Compound EX4 reacts with Y2 giving two products: EX3Y and XY. Calculate the E-X bond enthalpy if the reaction liberates 243.6 kJ/mol and other bond enthalpies are: Y-Y 109 kJ/mol, X-Y 123.1 kJ/mol and E-Y 290 kJ/mol.

• A) 60.5 kJ/mol
• B) 547.7 kJ/mol
• C) 20.6 kJ/mol
• D) 234.7 kJ/mol
• E) 176.9 kJ/mol

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