Three groups of drugs are used to reduce the stickiness of platelets, thus preventing platelets from clumping together to form platelet plugs. The anti-platelet drugs are most effective in preventing abnormal blood clots from forming in arteries (as opposed to veins). Aspirin and dipyridamoleâ (Aggrenox).
In order to react, colliding molecules must have a total kinetic energy equal to or greater than some minimum value [Figure 14.13(b)]. The minimum energy required to initiate a chemical reaction is called the activation energy, Ea. The value of Ea varies from reaction to reaction.
Calculate the Gibbs free energy change (ïG) for the following chemical reaction: ATP ADP + P. i. The reaction occurs at 68 Â°F, the change in heat (ïH) = 19,070 cal, and the. change in entropy (ïS) = 90 cal/K. 68Â°F = 293K, therefore the equation is set up in the following way: ïG = ïH â TïS.