Find the pH of each of the following solutions
of mixtures of acids:
a)0.100M in HBr and 0.115M in HCHO2
b)0.170M in HNO2 and 8.0�10?2M in HNO3
c) 0.190M in HCHO2 and 0.230M in HC2H3O2
d)5.0�10?2M in acetic acid and 5.0�10?2M
in hydrocyanic acid