Sodium Bicarbonate

碳酸氢钠

NaHCO₃

Sodium bicarbonate is a weak base which is commonly known as baking soda and used in cooking. It weakly ionizes in water:

碳酸氢钠是一种弱碱，也称为小苏打，常用于烹饪。它在水中微弱电离：

NaHCO₃ + H₂O -> H₂CO₃ + OH^- + Na⁺

In reaction with an acid, it liberates carbon dioxide gas:

与酸反应时，会释放出二氧化碳气体：

NaHCO₃ + H⁺_{(from acid)} -> Na⁺ + H₂O + CO₂ _gas

This reaction is an important part of the leavening which takes place in baking. Baking powder contains sodium bicarbonate and a weak acid (cream of tartar) in dry form. No reaction occurs in the dry powder, but when water is added for cooking, the reaction above occurs to release carbon dioxide to make the baked item "rise".

这个反应是烘焙过程中使面团膨胀的重要部分。苏打粉中含有碳酸氢钠和一种弱酸（cream of tartar），以干粉形式存在。在干粉中不会发生反应，但当加入水进行烹饪时，上述反应会发生，释放二氧化碳，使烘焙成品膨胀。

Common Bases

常见基底

Inorganic Compounds

无机化合物

NaHCO₃ + H₂O → H₂CO₃ + OH⁻ + Na⁺；NaHCO₃ + H⁺（来自酸）→ Na⁺ + H₂O + CO₂气体

Index

Base Concepts

Chemistry concepts

索引基础概念化学概念

HyperPhysics*****Chemistry

HyperPhysics ***** 化学

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