Definition

1. Noun:
   • A white crystalline salt (KHCO3): Potassium hydrogen carbonate is an inorganic compound with the chemical formula KHCO₃. It appears as a white, crystalline powder or solid.
   • A leavening agent and acidity regulator: It is used in baking powder to help dough rise by producing carbon dioxide gas when combined with an acid and moisture. It also functions as an antacid to neutralize excess stomach acid.

Usage Examples

• Noun:
  • Potassium hydrogen carbonate is a key ingredient in some low-sodium baking powders.
  • The pharmacist recommended a medication containing potassium hydrogen carbonate for heartburn relief.

Advanced Usage

• In Chemistry: The compound dissociates in water to form potassium, bicarbonate, and carbonate ions, acting as a buffer to stabilize pH.

  • The solution was buffered using potassium hydrogen carbonate to maintain a stable pH for the reaction.

• In Food Science: It is listed as food additive E501(ii) and is used as a stabilizer or raising agent in various processed foods.

  • The ingredient list showed E501(ii), indicating the presence of potassium hydrogen carbonate as a stabilizer.

Variants and Related Words

• Potassium bicarbonate: This is a common synonym for potassium hydrogen carbonate. They refer to the same chemical compound (KHCO₃).
• Baking soda (Sodium bicarbonate, NaHCO₃): A related compound with similar leavening and antacid properties, but containing sodium instead of potassium.

Synonyms

• Potassium bicarbonate: The IUPAC name and most frequent synonym.
• KHCO₃: The chemical formula used as a shorthand name in scientific contexts.
• Monopotassium carbonate: An older, less common name.

Related Phrases and Terms

• Leavening agent: A substance used to produce gas in dough or batter, causing it to rise. Potassium hydrogen carbonate is one type.
• Antacid: A substance that neutralizes stomach acidity. Potassium hydrogen carbonate can serve this function.

Noun

1. a crystalline salt (KHCO3) that is used in baking powder and as an antacid