At what time of day are dissolved oxygen levels most likely to be highest? a. 6: 00 am b. 12: 00 pm (noon) c. 6: 00 pm d. 12: 00 am (midnight)

The answer would be C

It would be 6:00 PM at its highest!

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The pH of a solution prepared is 5.056

Explanation:

The computation of the pH of a solution is shown below:

For a buffer solution,

As we know that

pH = pKa+ log ( whether it is a salt or anacid)

pKa = -log ( 1.76 × 10^5)

pH = -log ( 1.76 ) + 5 + log ( 2)

pH = 5 + 0.301 - 0.245

= 5.056

Hence, the pH of a solution prepared is 5.056 and the same is to be considered