Determine the pH of water solutions with the following characteristics. Classify each solution as acidic, basic,...

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Determine the pH of water solutions with the following characteristics. Classify each solution as acidic, basic, or neutral.

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Answer 1

Answer #1

a)

use:

pH = -log [H+]

= -log (5.2*10^-3)

= 2.28

Since pH is less than 7, it is acidic

Answer: 2.28, acidic

b)

use:

pH = -log [H+]

= -log (5.3*10^-12)

= 11.28

Since pH is greater than 7, it is basic

Answer: 11.28, basic

c)

use:

pOH = -log [OH-]

= -log (5.2*10^-4)

= 3.284

use:

PH = 14 - pOH

= 14 - 3.284

= 10.716

Since pH is greater than 7, it is basic

Answer: 10.72, basic

d)

use:

pOH = -log [OH-]

= -log (5.3*10^-10)

= 9.2757

use:

PH = 14 - pOH

= 14 - 9.2757

= 4.7243

Since pH is less than 7, it is acidic

Answer: 4.72, acidic

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Answer 2

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