api: YAML JSON TOON Database
version: 1.0.0
format: yaml
dataset:
  id: 2870
  slug: ph-scale-indicators
  title: pH Scale and Indicators
  description: pH ranges and common indicator color changes.
  summary: The pH scale from strongly acidic to strongly basic, with the usual category for each value and the color of universal indicator. Rows for pH 2, 3, 4, 6, 8, 10, 11, 12 and 14 fill in the scale between the original reference points.
  use_when:
    - You need the category and approximate indicator color for a pH value.
    - You are explaining the scale to a learner.
  caveats:
    - Indicator colors are approximate and depend on the specific indicator or test paper used.
    - pH 7 is neutral only at 25 degrees Celsius; the neutral point shifts with temperature.
  related:
    - common-acids-bases
    - chemical-bond-types
    - thermodynamics-laws
  entry_count: 14
  fields:
    - section: data
      field: ph
      type: integer
      example: "1"
    - section: data
      field: category
      type: string
      example: Strongly acidic
    - section: data
      field: indicator_color
      type: string
      example: Red with universal indicator
  category: Chemistry
  category_slug: chemistry
  tags: chemistry,ph,indicators
  view_count: 52
  created_at: 1793403093
  updated_at: 1793403093
data:
  - ph: 1
    category: Strongly acidic
    indicator_color: Red with universal indicator
  - ph: 5
    category: Weakly acidic
    indicator_color: Orange
  - ph: 7
    category: Neutral
    indicator_color: Green
  - ph: 9
    category: Weakly basic
    indicator_color: Blue
  - ph: 13
    category: Strongly basic
    indicator_color: Purple
  - ph: 2
    category: Strongly acidic
    indicator_color: Red
  - ph: 3
    category: Acidic
    indicator_color: Orange-red
  - ph: 4
    category: Acidic
    indicator_color: Orange
  - ph: 6
    category: Weakly acidic
    indicator_color: Yellow
  - ph: 8
    category: Weakly basic
    indicator_color: Blue-green
  - ph: 10
    category: Basic
    indicator_color: Blue
  - ph: 11
    category: Basic
    indicator_color: Blue-violet
  - ph: 12
    category: Strongly basic
    indicator_color: Violet
  - ph: 14
    category: Strongly basic
    indicator_color: Purple