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pH Scale - JSON

The pH scale is a logarithmic measure of hydrogen ion concentration in aqueous solutions. Proposed in 1909 by Danish biochemist S.P.L. Sørensen, it is defined by the formula pH = -log₁₀[H⁺]. A pH of 7 is neutral, 0-6 is acidic, and 8-14 is alkaline (basic). It is widely used in chemistry, biology, agriculture, medicine, and environmental science. As a logarithmic scale where each pH unit represents a tenfold difference in hydrogen ion concentration, a change of 1 pH unit means the acidity or alkalinity changes by a factor of 10.

hydrogen ion concentration acidity alkalinity basicity chemistry aqueous solution logarithmic scale 
[
  {
    "code": "0",
    "slug": "ph-0-strongly-acidic",
    "name": "pH 0 (Strongly Acidic)",
    "description": "The most strongly acidic pH value.",
    "phValue": 0,
    "classification": "Strongly Acidic",
    "examples": [
      {
        "name": "Hydrochloric Acid (1M)",
        "ph": "0.0"
      },
      {
        "name": "Battery Acid",
        "ph": "0.0-1.0"
      }
    ]
  },
  {
    "code": "1",
    "slug": "ph-1-gastric-acid",
    "name": "pH 1 (Gastric Acid)",
    "description": "The pH value of human gastric acid.",
    "phValue": 1,
    "classification": "Strongly Acidic",
    "examples": [
      {
        "name": "Gastric Acid",
        "ph": "1.0-2.0"
      }
    ]
  },
  {
    "code": "2",
    "slug": "ph-2-lemon-juice",
    "name": "pH 2 (Lemon Juice)",
    "description": "The pH value of citrus fruits like lemon juice.",
    "phValue": 2,
    "classification": "Acidic",
    "examples": [
      {
        "name": "Lemon Juice",
        "ph": "2.0-2.3"
      },
      {
        "name": "Vinegar",
        "ph": "2.4-3.0"
      }
    ]
  },
  {
    "code": "3",
    "slug": "ph-3-orange-juice",
    "name": "pH 3 (Orange Juice)",
    "description": "The pH value of orange juice and soft drinks.",
    "phValue": 3,
    "classification": "Acidic",
    "examples": [
      {
        "name": "Orange Juice",
        "ph": "3.0-4.0"
      },
      {
        "name": "Soft Drinks",
        "ph": "2.5-3.5"
      }
    ]
  },
  {
    "code": "4",
    "slug": "ph-4-tomato",
    "name": "pH 4 (Tomato)",
    "description": "The pH value of tomatoes and beer.",
    "phValue": 4,
    "classification": "Weakly Acidic",
    "examples": [
      {
        "name": "Tomato",
        "ph": "4.0-4.6"
      },
      {
        "name": "Beer",
        "ph": "4.0-5.0"
      }
    ]
  },
  {
    "code": "5",
    "slug": "ph-5-coffee",
    "name": "pH 5 (Coffee)",
    "description": "The pH value of black coffee and rainwater.",
    "phValue": 5,
    "classification": "Weakly Acidic",
    "examples": [
      {
        "name": "Black Coffee",
        "ph": "5.0"
      },
      {
        "name": "Rainwater",
        "ph": "5.0-5.5"
      }
    ]
  },
  {
    "code": "6",
    "slug": "ph-6-milk",
    "name": "pH 6 (Milk)",
    "description": "The pH value of milk and saliva.",
    "phValue": 6,
    "classification": "Weakly Acidic",
    "examples": [
      {
        "name": "Milk",
        "ph": "6.5-6.8"
      },
      {
        "name": "Saliva",
        "ph": "6.2-7.4"
      }
    ]
  },
  {
    "code": "7",
    "slug": "ph-7-neutral",
    "name": "pH 7 (Neutral)",
    "description": "The pH of pure water, the boundary between acidic and alkaline.",
    "phValue": 7,
    "classification": "Neutral",
    "examples": [
      {
        "name": "Pure Water",
        "ph": "7.0"
      }
    ]
  },
  {
    "code": "8",
    "slug": "ph-8-seawater",
    "name": "pH 8 (Seawater)",
    "description": "The pH value of seawater.",
    "phValue": 8,
    "classification": "Weakly Alkaline",
    "examples": [
      {
        "name": "Seawater",
        "ph": "8.0-8.5"
      }
    ]
  },
  {
    "code": "9",
    "slug": "ph-9-baking-soda",
    "name": "pH 9 (Baking Soda)",
    "description": "The pH value of baking soda (sodium bicarbonate).",
    "phValue": 9,
    "classification": "Weakly Alkaline",
    "examples": [
      {
        "name": "Baking Soda",
        "ph": "8.3-9.0"
      }
    ]
  },
  {
    "code": "10",
    "slug": "ph-10-soap",
    "name": "pH 10 (Soap)",
    "description": "The pH value of soap and borax.",
    "phValue": 10,
    "classification": "Alkaline",
    "examples": [
      {
        "name": "Soap",
        "ph": "9.0-10.0"
      },
      {
        "name": "Borax",
        "ph": "9.0-10.0"
      }
    ]
  },
  {
    "code": "11",
    "slug": "ph-11-ammonia",
    "name": "pH 11 (Ammonia)",
    "description": "The pH value of ammonia solution.",
    "phValue": 11,
    "classification": "Alkaline",
    "examples": [
      {
        "name": "Ammonia Solution",
        "ph": "11.0"
      }
    ]
  },
  {
    "code": "12",
    "slug": "ph-12-bleach",
    "name": "pH 12 (Bleach)",
    "description": "The pH value of household bleach.",
    "phValue": 12,
    "classification": "Strongly Alkaline",
    "examples": [
      {
        "name": "Bleach",
        "ph": "12.0-13.0"
      }
    ]
  },
  {
    "code": "13",
    "slug": "ph-13-lye",
    "name": "pH 13 (Sodium Hydroxide)",
    "description": "The pH value of sodium hydroxide (lye/caustic soda).",
    "phValue": 13,
    "classification": "Strongly Alkaline",
    "examples": [
      {
        "name": "Sodium Hydroxide (Lye)",
        "ph": "13.0-14.0"
      }
    ]
  },
  {
    "code": "14",
    "slug": "ph-14-strongly-alkaline",
    "name": "pH 14 (Most Strongly Alkaline)",
    "description": "The most strongly alkaline pH value.",
    "phValue": 14,
    "classification": "Strongly Alkaline",
    "examples": [
      {
        "name": "Sodium Hydroxide (1M)",
        "ph": "14.0"
      }
    ]
  }
]