State the chemical property in each case on which the following uses of baking soda are based:
(i) as an antacid.
(ii) as a constituent of baking powder. [3 MARKS]

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Solution

Each point: 1.5 Mark

1. It is weakly alkaline in nature and neutralizes acid (HCl) formed in the stomach. The reaction involved is

${NaHCO}_{3} + HCl \to NaCl + H_{2} O + {CO}_{2}$

2. It evolves ${CO}_{2}$ in the form of bubbles when cake is made by baking. As a result, the cake becomes porous as well as fluffy. The reaction involved is

${NaHCO}_{3} \to {Na}_{2} {CO}_{3} + H_{2} O + {CO}_{2}$

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State the chemical property in each case on which the following uses of baking soda are based:
(i) as an antacid.
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Q. Match the chemical substances given in column (I) with their appropriate application given in column (II):

Column I	Column II
(1) Bleaching powder	(i) Preparation of glass
(2) Baking soda	(ii) Production of $H_{2}$ and $C l_{2}$
(3) Washing Soda	(iii) Decolourisation
(4) Sodium chloride	(iv) Antacid

Q. Write one point of difference between each of the following :
(i) A hydrated salt and an anhydrous salt
(ii) Washing soda and soda ash
(ii) Baking soda and Baking powder.

Q. Baking soda or sodium bicarbonate

(N a H {C O}_{3})

is a versatile compound. Which of the following is an example of chemical properties of baking soda ?

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State the chemical property in each case on which the following uses of baking soda are based: (i) as an antacid. (ii) as a constituent of baking powder. [3 MARKS]

State the chemical property in each case on which the following uses of baking soda are based:
(i) as an antacid.
(ii) as a constituent of baking powder. [3 MARKS]