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pH Calculator

Inputs

Hydrogen Ion Concentration [H+](mol/L)

Enter the concentration in mol/L (molar). Use scientific notation (e.g., 1e-7 for 10^-7)

Calculation Mode

Choose whether to calculate pH from [H+] or pOH from [OH-]

pH Value

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Acidity or alkalinity measure (0-14 scale)

pOH Value

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Solution Type

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Formula

pH = -log10[H+]