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Cambridge IGCSE Chemistry practice

Paper 4 structured question: The characteristic properties of acids and bases

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The characteristic properties of acids and bases

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Paper 4Theory (Extended)1 marks

The strength of acids is determined by their ability to dissociate in solution.

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Acid Strength Comparison

Hydrochloric acid (HCl) is a strong acid, while acetic acid (CH₃COOH) is a weak acid. HCl completely dissociates in water, while CH₃COOH only partially dissociates.

  1. a

    State the difference in dissociation between hydrochloric acid and acetic acid.

    Aim for approximately 1 distinct marking point.

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Paper 4 structured question: The characteristic properties of acids and bases

Paper 4Theory (Extended)1 marks

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Hydrochloric Acid Dissociation

When hydrochloric acid (HCl) is added to water, it dissociates completely into hydrogen ions (H⁺) and chloride ions (Cl⁻).

  1. a

    State the ions produced when hydrochloric acid is dissolved in water.

    Aim for approximately 1 distinct marking point.

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