The atomization enthalpy of {CH}_{4} is 1660 {kJ} {mol}^{-1}. The C-H bond enthalpy of each successive step in {CH}_{4} \to {CH}_{3} \to {CH}_{2} \to {CH} are +15,+30 and +45 {kJ} {mol}^{-1} higher than the mean bond enthalpy of {CH} bonds, respectively. The bond enthalpy of the last {C}- {H} unit is

Correct Answer is : 325kJmol−1

AP EAPCET 08-Jul-2022 Shift 2 Paper

Section: Chemistry

Question : 131 of 160

Marks: +1, -0

The atomization enthalpy of CH4 is 1660kJmol−1. The C-H bond enthalpy of each successive step in CH4→CH3→CH2→CH are +15,+30 and +45kJmol−1 higher than the mean bond enthalpy of CH bonds, respectively. The bond enthalpy of the last C−H unit is

400kJmol−1
325kJmol−1
475kJmol−1
385kJmol−1

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