potassium carbonate

例句：

1. 1. Potassium carbonate is a common chemical used in baking and cooking.
   碳酸钾是一种在烘焙和烹饪中常用的常见化学物质。
2. 2. The potassium carbonate reacts with water to form carbon dioxide gas.
   碳酸钾与水反应生成二氧化碳气体。
3. 3. In the laboratory, potassium carbonate is often used as a source of ionizing radiation.
   在实验室中，碳酸钾通常用作离子辐射源。