For the following zero order reaction, the half-life is 68.7 and the [A] 0 = 7. Calculate the rate constant. 2 A 3 B Consider the following reaction….

0 3 B
Consider the following reaction.
aA +bB →cC 0
o
0
A 0.248 M solution of a weak acid (HA) is made. The solution has a pH of 3.12. Calculate the Ka of this acid. Report your answer in scientific notation with 3 sig figs.