Question

PLEASE HELP ASAP!!
1. what is the pOH of a solution if the pH is 2.23?

A. pOH=13
B. pOH=11.77
C. pOH=8.52
D. pOH=10.52

2. what is the pOH of a solution if the pH is 2.23

A. pOH=1
B. pOH=12
C. pOH=8
D. pOH=9

3. Given a solution of perchloric acid has a concentration of .023M, what is the pH and pOH

A. pH=2.3 and pOH=11.97
B. pH=1.64 and pOH= 12.36
C. pH=4.5 and pOH=9.95

Answer 1

1) POH=14-2.23=11.77
2)B
3)HClO4=H+ +clo4—
C(H+)=0.023 M
pH=-log[H+]=1.63
POH=14-1.63=12.37