1.

If enthalpies of methane and ethane are respectively 320 and 360 calories then the bond energy of C - C bond is

Answer»

80 CALORIES
40 calories
60 calories
120 calories

Solution :`CH_(4)` has 4C-H bond
`E_(C-H)=(320)/(4)=80`
In `C_(2)H_(6)` there is
6 implies C-H bond and 1 implies C-C bond
`360=E_(C-C)+6E_(C-H)`
`360=E_(C-C)+6xx80`
`E_(C-C)=120 cal`.


Discussion

No Comment Found

Related InterviewSolutions