Which statement about reactions is correct?
- AA reaction that is vigorous at room temperature has a high activation energy.
- BIf $\Delta H$ for a reaction is positive, bond making in the formation of the products is endothermic.
- CIn an exothermic reaction, the energy required to break bonds is less than the energy released to make bonds.
- DReactions with a positive enthalpy change always transfer thermal energy to the surroundings.