pH & Hydrogen Ions (AQA A-Level Chemistry): Flashcards

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pH & Hydrogen Ions
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Type of scale used for pH

Logarithmic

Change in [H+][\text{H}^+] per pH unit

Tenfold change

Formula for pH

pH=−log⁡10[H+]\text{pH} = -\log_{10} [\text{H}^+]

Formula for [H+][\text{H}^+] from pH

[H+]=10−pH[\text{H}^+] = 10^{-\text{pH}}

pH of neutral solution at 25°C

7.00

pH range for acidic solutions

< 7.00

pH range for alkaline solutions

7.00

Dissociation extent of strong acids

Fully dissociate

What type of acid is H2SO4\text{H}_2\text{SO}_4?

Diprotic acid

For diprotic acids, [H+][\text{H}^+] equals?

2×[acid]2 \times [\text{acid}]

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