Entropy____ . a. tends to disperse c. tends to decrease, overall b. is free energy d. is a measure of disorder

SECTION 1: ACTIVATION ENERGY The picture to the right shows someone trying to push a boulder up a hill. In order for the boulder to reach its final destination at point B, it must be pushed to the top of the hill because once it reaches the top of the hill it will roll down the rest of the way. A similar scenario exists in chemistry, before a chemical reaction will take place, energy must be put into the system. The energy needed for a chemical reaction to move from point A to the top of the hill is known as activation energy, also written as Ea. Increasing Energy. Activation Energy Activation Energy Energy Content of Reactants A + B Reactants FIGURE 3 J Progress of Reaction. t $ Uncatalyzed Reaction (without enzyme) Energy Content of Products V FIGURE 2 Catalyzed Reaction (with enzyme) C + D Products A م اسکار (TIME) 3. Compare Figure 3 above to the Figure 1 (comparing the heights of 2 mountains), determine how using an enzyme in a chemical reaction impacts the reaction by answering…

A thermodynamically spontaneous reaction O A. happens quickly, with no addition of energy to the system O"happens quickly whether or not there is an addition of energy to the system В. has the capacity to happen but might not happen quickly has the capacity to happen but only in the presence of a catalyst

Fill in blank:   An ES complex that releases 30 kj/mol of binding free energy will _____ (raise or lower) the activation energy barrier needed to reach the transition state.