Ch ical chemistr Reaction Kinetic R ate laws For many reactions r=k[4y[B2…[y (175) k: rate constant (rate coefficient),kfT, P) as B,.n: order or partial order a+B+..+h=n: overall order The expression for ras a function of concentrations at a fired temperature is called the rate law6 Physical Chemistry Rate Laws For many reactions          r = k A B  L (17.5)* k: rate constant (rate coefficient), k = f (T, P) , , : order or partial order + +  +  n : overall order The expression for r as a function of concentrations at a fixed temperature is called the rate law. Reaction Kinetics