85.0 mL of 0.25 M HF (Ka = 7.2 x 10-4)is titrated with 5.0 mL of 0.80 M NaOH. Calculate the pH at this point in the titration.
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Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Tell me the iupac names of the following alcohols: