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 s

1.	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'.
Answer» Solution :Compound .A. is sodium hydrogencarbonate - `NaHCO_3`. (i) It is used in fire EXTINGUISHERS because it produces `CO_2` gas on reaction with acid. `H_(2)SO_(4)+2NaHCO_(3) rarr Na_(2)SO_(4) + 2H_(2)O+ 2CO_(2)` (ii) It is used as an antacid because in neutralises excess acid (HCl) present in stomach . `HCl + NaHCO_(3) rarr NaCl + H_(2)O + CO_(2)` (iii) It is used in making BAKERY items because on reaction with acid it produces `CO_2`gas which makes BREAD, cakes , etc., SOFT and spongy. `NaHCO_3 +H rarrH_(2)O+CO_(2)uarr` + Na - salt of acid