In Search of Solutions: Technician in trouble! What solutions are which?

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In Search of Solutions: Can you distinguish between water, acid, alkali and indicator solutions? Linking to topics on acids/alkalis and neutralisation.

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Technician in trouble! Which solutions are which?
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Level

Use

Specification

England
- GCSE
  - Edexcel Chemistry
    - Topic 3 - Chemical changes
      - Acids
        3.3 Recall the effect of acids and alkalis on indicators, including litmus, methyl orange and phenolphthalein
  - Edexcel Combined science
    - Topic 3 - Chemical changes
      - Acids
        3.3 Recall the effect of acids and alkalis on indicators, including litmus, methyl orange and phenolphthalein
Scotland
- Higher
  - SQA Chemistry
    - 3. Chemistry in society
      - (e) Chemical analysis
        (ii) Volumetric analysis
        Titration is used to determine, accurately, the volumes of solution required to reach the end-point of a chemical reaction. An indicator is normally used to show when the end-point is reached. Titre volumes within 0.2 cm³ are considered concordant.
- National 5
  - SQA Chemistry
    - Chemistry in society
      - Chemical analysis
        Analytical methods
        An indicator is normally used to show when the end-point is reached.
    - Chemical changes and structure
      - Acids and bases
        pH
        The pH scale is an indication of the hydrogen ion concentration and runs from below 0 to above 14.
        Acidic solutions have a higher concentration of H⁺(aq) ions than OH⁻(aq) and have a pH below 7.
        Alkaline solutions have a higher concentration of OH⁻(aq) ions than H⁺(aq) ions and have a pH above 7.
Republic of Ireland
- Junior Cycle
  - Science
    - Chemical world
      - Systems and interactions
        8. Investigate reactions between acids and bases; use indicators and the pH scale
- Leaving Certificate
  - Chemistry
    - 9. Environmental chemistry: water
      - 9.1 pH Scale
        Depth of treatment
        pH scale. Use of universal indicator paper or solution. Limitations of the pH scale - usefulness confined to dilute aqueous solutions.
        Choice of indicator.

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