Chapter 6 Flashcards
1
Q
what is bond dissocation energy?
A
bond dissociation energy is the energy required (to be given to a compound) to break a covalent bond.
2
Q
are breaking bonds + or -?
A
breaking a bond requires an input of energy from the surroundings. (endothermic) thus, the final energy state of the entire system will be higher than the initial. thus, the change in enthalpy or free energy (f-i) of the system will be +.
3
Q
are forming bonds + or -?
A
forming a bond releases energy to the surroundings (exothermic), as the formed bond moves into a lower final energy state. thus, the final energy state of the system will be lower than the initial state. thus, the change in enthalpy or gibbs free energy (f-i) will be -.
