Homework Solutions

February 9

15:7.  Your friend is wrong.  A balanced chemical equation tells us how much of every chemical reacts, but it tells us nothing about how chemicals react.  Kinetics depends on which molecules collide with which, the order in which bonds break, the order in which bonds form, in general-- the specifics of a chemical reaction.

15:13.  M^(-1/2)s^-1

15.15.  
a.    rate = k[NO]²[Cl₂]

b.    k = rate/[NO]²[Cl₂] = 180 M^-2s^-1

15.18

a.    order wrt Hb is 1st, order wrt CO is 1st

b.    rate = k[Hb][CO]

c.    k = rate/[Hb][CO] = 0.2801, 0.2805, .2798; average = 0.280 mM^-1s^-1

d.    rate = (0.280 mM^-1s^-1)*(3.36 mmol/L)*(2.40 mmol/L) = 2.26 mM s^-1