A compound $A$ is used in fire extinguishers, as an antacid and its small amount is also used in making bakery items. Identify the compound and also explain the reason for above-mentioned uses of the compound $A$ .

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Solution

Compound $A$ is sodium hydrogen carbonate $N a H {C O}_{3}$
(i) It is used in the fire extinguishers because it produces ${C O}_{2}$ gas on reaction with acid.
$H_{2} {S O}_{4} + 2 N a H {C O}_{3} \to N a {S O}_{4} + 2 H_{2} O + 2 {C O}_{2}$
(ii) It is used as an antacid because it neutralises excess acid $(H C l)$ present in stomach
$H C l + N a H {C O}_{3} \to N a C l + H_{2} O + {C O}_{2}$
(iii) It is used in making bakery items because on reaction with acid it produces ${C O}_{2}$ gas which makes bread, cakes etc soft and spongy
$N a H {C O}_{3} + H^{+} \to H_{2} O + {C O}_{2} ↑ + N a$ -salt of acid

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A compound A is used in fire extinguishers, as an antacid and its small amount is also used in making bakery items. Identify the compound and also explain the reason for above-mentioned uses of the compound A.

A compound $A$ is used in fire extinguishers, as an antacid and its small amount is also used in making bakery items. Identify the compound and also explain the reason for above-mentioned uses of the compound $A$ .