Calculate the pH of each solution. Part A [OH] = 6.8×10 11 M Express your answer

Question

Calculate the pH of each solution.

Part A

[OH] = 6.8×1011 M

Express your answer using two decimal places.

Part B

[OH] = 3.6×103 M

Express your answer using two decimal places.

Part C

[OH] = 8.8×1012 M

Express your answer using two decimal places.

Part D

[OH] = 9.4×104 M

Express your answer using two decimal places.

Part B

[OH] = 3.6×103 M

Express your answer using two decimal places.

Part C

[OH] = 8.8×1012 M

Express your answer using two decimal places.

Part D

[OH] = 9.4×104 M

Express your answer using two decimal places.

Explanation / Answer

A)

we have below equation to be used:

pOH = -log [OH-]

= -log (6.8*10^-11)

= 10.17

we have below equation to be used:

PH = 14 - pOH

= 14 - 10.17

= 3.83

Answer: 3.83

B)

we have below equation to be used:

pOH = -log [OH-]

= -log (3.6*10^-3)

= 2.4437

we have below equation to be used:

PH = 14 - pOH

= 14 - 2.4437

= 11.5563

Answer: 11.56

C)

we have below equation to be used:

pOH = -log [OH-]

= -log (8.8*10^-12)

= 11.0555

we have below equation to be used:

PH = 14 - pOH

= 14 - 11.0555

= 2.9445

Answer: 2.94

D)

we have below equation to be used:

pOH = -log [OH-]

= -log (9.4*10^-4)

= 3.0269

we have below equation to be used:

PH = 14 - pOH

= 14 - 3.0269

= 10.97

Answer: 10.97

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