Calculate the pH and the pOH of an aqueous solution that is 0.030 M in HCl(aq)...

Question

Question

Calculate the pH and the pOH of an aqueous solution that is 0.030 M in HCl(aq) and 0.095 M in HBr(aq) at 25 C

Thank you in advance

science chemistry

Answer 1

Answer #1

Total [H+] = [H+] from HCl + [H+] from HBr
= 0.030 M + 0.095 M
= 0.125 M

use:
pH = -log [H+]
= -log (0.125)
= 0.903

POH = 14 - pH
= 14 - 0.903
= 13.097

Answer:
pH = 0.903
POH = 13.097

Answer 2

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