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

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