Exercise 14.69 Calculate the pH of each solution. Part A [H3O+] = 4.7×10 8 M Exp

Question

Exercise 14.69

Calculate the pH of each solution.

Part A

[H3O+] = 4.7×108 M

Express your answer using two decimal places.

Part B

[H3O+] = 3.0×107 M

Express your answer using two decimal places.

Part C

[H3O+] = 8.2×106 M

Express your answer using two decimal places.

Part D

[H3O+] = 7.4×104 M

Express your answer using two decimal places.

Exercise 14.69

Calculate the pH of each solution.

Part A

[H3O+] = 4.7×108 M

Express your answer using two decimal places.

pH =

Part B

[H3O+] = 3.0×107 M

Express your answer using two decimal places.

pH =

Part C

[H3O+] = 8.2×106 M

Express your answer using two decimal places.

pH =

Part D

[H3O+] = 7.4×104 M

Express your answer using two decimal places.

pH =

Explanation / Answer

pH = - log[H3O+]

part a

[H3O+] = 4.7×108 M

- log[H3O+] = -log [4.7×108 ]

pH = 7.33

part b

[H3O+] = 3.0×107 M

- log[H3O+] = -log [3.0×107 ]

pH = 6.52

part c

[H3O+] = 8.2×106 M

- log[H3O+] = -log [8.2×106 ]

pH = 5.09

part d

[H3O+] = 7.4×104 M

- log[H3O+] = -log [7.4×104]

pH = 3.13

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