The variation of lnKc vs. (l)/(T) gives straight line having an angle of 45^(@) . The value of heat of reaction inCal is _____

The variation of lnKc vs. (l)/(T) gives straight line having an angle

1.	The variation of lnKc vs. (l)/(T) gives straight line having an angle of 45^(@) . The value of heat of reaction inCal is _____
Answer» Solution :In `KC=A.e^(-(DELTAH)/(RT))` In `Kc=((-DeltaH)/(R))(1)/(T)` + In A for EXOTHERMIC `(DeltaH)/(R)=tan 45^(@)` `DeltaH = R=2cal`