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What is the chemical formula of baking soda and why is it basic in nature?
NaHCO₃, because it is a salt of a strong base and a weak acid
Na₂CO₃, because it releases hydroxide ions directly
NaOH, because it is a strong alkali
NaCl, because it contains sodium
NaHCO₃, because it is a salt of a strong base and a weak acid
The chemical formula of baking soda is NaHCO3, which stands for Sodium Bicarbonate. It acts as a weak base in aqueous solutions because it undergoes hydrolysis to form a basic solution.
The chemical formula of baking soda is NaHCO3, which stands for Sodium Bicarbonate. It acts as a weak base in aqueous solutions because it undergoes hydrolysis to form a basic solution.
Think of baking soda as a mild 'buffer' that keeps things slightly alkaline, similar to how an antacid neutralizes excess stomach acid.
Baking Soda is 'Basic' (starts with B, ends with a basic pH).
NaHCO3 — Chemical formula of Sodium Bicarbonate
HCO3−+H2O⇌H2CO3+OH− — Hydrolysis reaction showing basic nature
Baking soda is a salt derived from a strong base (NaOH) and a weak acid (H2CO3). When dissolved in water, the bicarbonate ion (HCO3−) undergoes hydrolysis, reacting with water to produce hydroxide ions (OH−), which increases the pH of the solution. The reaction is: HCO3−+H2O⇌H2CO3+OH−.
Sodium bicarbonate is an amphoteric compound but behaves as a weak base in solution.
It is also known as Sodium Hydrogen Carbonate.
It decomposes on heating to release CO2 gas, which helps dough rise.
Acts as a leavening agent in baking.
Functions as a mild antiseptic and cleaning agent.
Excessive consumption can lead to systemic alkalosis.
Can leave a soapy aftertaste if used in excess.
Used in fire extinguishers for releasing CO2.
Used in the pharmaceutical industry to treat acidity.
The pH of a 0.1M solution of baking soda is approximately 8.3.
Option B (Na2CO3) is Washing Soda (Sodium Carbonate).
Option C (NaOH) is Caustic Soda (Strong base).
Option D (Na Cl) is Common Salt (Neutral salt).
A is correct — NaHCO3 is a salt of a strong base and a weak acid, resulting in a basic aqueous solution due to hydrolysis.
Always remember the rule: Salt of strong base + weak acid = Basic salt; Salt of weak base + strong acid = Acidic salt; Strong + Strong = Neutral.
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