Question

Which indicator would be best to use for a titration of 0.25 M NaOH with 0.25 M HF (Ka = 3.5×10^-4)? m-Nitrophenol (pKa = 7.9), Curcumin (pKa = 10.6), Chlorphenol red (pKa = 5.7), Methyl violet (pKa = 1.8), Bromophenol blue (pKa = 2.5).

Name: which indicator would be best to use for a titration of 025 m naoh with 025 m hf ka 3510 4 m nitrophenol pka 79 curcumin pka 106 chlorphenol red pka 57 methyl violet pka 18 bromophenol blue 43511
Uploaded: 2023-03-30T14:17:03-08:00
Duration: 3 min 57 s
Channel: Sri K
Description: which indicator would be best to use for a titration of 025 m naoh with 025 m hf ka 3510 4 m nitrophenol pka 79 curcumin pka 106 chlorphenol red pka 57 methyl violet pka 18 bromophenol blue 43511

          Which indicator would be best to use for a titration of 0.25 M NaOH with 0.25 M HF (Ka = 3.5×10^-4)? m-Nitrophenol (pKa = 7.9), Curcumin (pKa = 10.6), Chlorphenol red (pKa = 5.7), Methyl violet (pKa = 1.8), Bromophenol blue (pKa = 2.5).

Added by Tanner G.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

03/30/2023

Step 1

First, we need to find the pH at the equivalence point of the titration. Since we are titrating a strong base (NaOH) with a weak acid (HF), the pH at the equivalence point will be greater than 7. Show more…

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Which indicator would be best to use for a titration of 0.25 M NaOH with 0.25 M HF (Ka = 3.5×10^-4)? m-Nitrophenol (pKa = 7.9), Curcumin (pKa = 10.6), Chlorphenol red (pKa = 5.7), Methyl violet (pKa = 1.8), Bromophenol blue (pKa = 2.5).