What is the pH to the correct number of significant figures for solutions with the following concentrations of H3O+ or OH−?
[OH−] = 5.0×10−3 M pH=
[H3O+] = 10−8 M pH=
[H3O+] = 4.0 M . pH=
[OH−] = 5.0×10−3 M
pH= 14 - Poh
Poh = -log[OH-] = -log(5.0*10^-3) = 2.3
Ph = 14 - 2.3 = 11.7
Ph = 12
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[H3O+] = 10−8 M
pH= -log[H3O+]
Ph = -log[10^-8]
Ph = 8
[H3O+] = 4.0 M .
pH= -log[H3O+]
Ph = -log[4]
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