Question

3. The pH of a salt used to make tasty and crispy pakoras is 14. Examine the salt. Write a chemical equation for its formation. List its two uses.​

Answer 1

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Answer 2

★ Solution :-

The required salt is NaHCO₃ (Sodium Bicarbonate - Baking Soda).

How did we get our solution ?

It is given that the salt is used to make crispy and tasty pakoras and it's pH is 14 .

This means that the salt is basic in nature . And since pakoras are deep fried thus they are heated a lot. So for making the pakoras crispy the salt should release Carbon Dioxide (CO₂) when heated. Also the salt should not be bad for health because we are consuming it.

And we already know that Sodium Bicarbonate (NaHCO₃), also known as Baking Soda has all these properties that is its pH is 14 and also it is used in making pakoras.

So the salt is Sodium Bicarbonate (NaHCO₃) .

• Examining the Salt ::

Let's look at some properties of the salt .

→ It is white crystalline powder.

→ It gives out Sodium Carbonate (Na₂CO₃) , Water (H₂O) and Carbon Dioxide (CO₂) when heated.

2NaHCO₃ (s) → Na₂CO₃ (s) + H₂O (l) + CO₂ (g)

→ It is formed when Sodium Chloride (NaCl) reacts with Ammonia (NH₃) in presence of Water (H₂O) and Carbon Dioxide (CO₂).

NaCl (s) + NH₃ (l) + H₂O (l) + CO₂ (g) → NH₄Cl (g) + NaHCO₃ (s)

→ It forms alkaline solution when reacts with water.

• Uses of NaHCO₃ (Sodium Bicarbonate) ::

• It is used to make cakes and pakoras more crispy and spongy.

• It is used in confectionery industries.

• It is used to make bases.

• It is used as mild antacid to cure acidity.

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★ More to know ::

• Acids : These are the chemicals which release Hydrogen ion in their aqueous form.

• Bases : These are the chemicals which release Hydroxide ion in their aqueous form.

• Antacids : These are the mild bases which are used to cure acidity which forms neutralization reaction when reacts with acid.

• pH : It is the value used to measure the acidity or basicity of a solution.