Skip to content
    Chemistry A-Level

    cation in acid

    What cation in acid means in Chemistry A-Level, as defined for AQA.

    Definition of cation in acid

    Check what you remember

    Read the wording for your board, then hide it and explain cation in acid in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    In excess acid the carboxylate ion is protonated back to COOH while the nitrogen keeps its extra proton, giving a single positive charge overall.
    AQA · Amino acids (A-level only) (study guide)

    Topics that use cation in acid

    Related terms

    Using cation in acid in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Chemistry questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Chemistry A-Level terms