What is the ph of a solution containing a 1.00 x 10−4 m solution of hcl?
a. 1
b. 4
c. 1 x 10^4
d. 1 x 10^4

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.