Question

Sodium bicarbonate is also known as:
(A). Washing soda
(B). Baking soda
(C). Glauber’s salt
(D).Lime soda

Answer 1

- .Hint: Sodium Bicarbonate is a very commonly used ingredient in the kitchen. It is used in bread and sometimes in cookies and crackers.

Complete step by step answer:
Sodium bicarbonate - \[N{{a}^{+}}HCO_{3}^{-}\], is a salt made up of a sodium cation \[(N{{a}^{+}})\] and a bicarbonate anion \[(HCO_{3}^{-})\].
It is known as baking powder, as it is used in baking as a leavening agent. When baking powder is added to a dough, it results in rising of the dough by releasing carbon dioxide. It is popularly used owing to its cheaper price and stability.
The chemical reaction for decomposition of Sodium Bicarbonate is given below-
\[2NaHC{{O}_{3}}(s)\to N{{a}_{2}}C{{O}_{3}}(s)+C{{O}_{2}}(g)\uparrow +{{H}_{2}}O(g)\uparrow \]
Sodium Bicarbonate, on heating decomposes into sodium carbonate, carbon dioxide and water vapour. The carbon dioxide and water vapour thus release and cause the dough to rise.
Therefore, the answer is option (b) – baking powder.

Additional Information:
Baking Soda - \[NaHC{{O}_{3}}\] -is used in preparation of bread, whereas, Baking Powder - \[N{{H}_{4}}HC{{O}_{3}}\]- is used in the preparation of biscuits and cookies. The decomposition of Baking powder is represented as-
\[N{{H}_{4}}HC{{O}_{3}}\to N{{H}_{3}}+C{{O}_{2}}+{{H}_{2}}O\]
It is used in biscuits, because biscuits have a larger surface area and gases can escape easily when baked at higher temperature.

Note: The purpose of sodium bicarbonate ranges from being used as a cooking ingredient to alkalizing, cleansing agent. Not only this, it can also be used as a fungicide. Also, do not confuse between Sodium Carbonate - \[N{{a}_{2}}C{{O}_{3}}\] and Sodium Bicarbonate - \[NaHC{{O}_{3}}\]. Sodium bicarbonate is known as Baking soda, whereas, Sodium Carbonate is known as washing soda.