Question

Calculate the H3O+ concentration for each pH: a) pH = 1.0x10^1 [H3O+]= ______ M b)pH=3 [H3O+]=...

Calculate the H3O+ concentration for each pH:

a) pH = 1.0x10^1

[H3O+]= ______ M

b)pH=3
[H3O+]= _____M

c) pH=7

[H3O+]= _____M




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Homework Answers

Answer #1

a)

we have below equation to be used:

pH = -log [H3O+]

10 = -log [H3O+]

log [H3O+] = -10

[H3O+] = 10^(-10)

[H3O+] = 1.0*10^-10 M

Answer: 1.0*10^-10 M

b)

we have below equation to be used:

pH = -log [H3O+]

3 = -log [H3O+]

log [H3O+] = -3

[H3O+] = 10^(-3)

[H3O+] = 1.0*10^-3 M

Answer: 1.0*10^-3 M

c)

we have below equation to be used:

pH = -log [H3O+]

7 = -log [H3O+]

log [H3O+] = -7

[H3O+] = 10^(-7)

[H3O+] = 1.0*10^-7 M

Answer: 1.0*10^-7 M

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