Solution of common walrus taken as a raw material to prepare a basic salt A, which is used in soda-acid fire extinguishers. On heating the compound A, CO2 gas is released and another basic salt B is formed.
a) identify and name the salts A and B
b) write the chemical equations involved in the above processes
c) CO2 gas released on heating A, serves some important purpose in bakeries. explain.
d) write one important use of compound B.
Answers
Answer:
b) write the chemical equations involved in the above processes
Explanation:
Reaction of acids with metal:
Acids give hydrogen gas along with respective salt when they react with a metal.
Metal + Acid ⇨ Salt + Hydrogen
Example: Hydrogen gas and zinc chloride are formed when hydrochloric acid reacts with zinc metal.
Zn + 2HCl ⇨ ZnCl2 + H2
Hydrogen gas and sodium chloride are formed when hydrochloric acid reacts with sodium metal.
2Na + 2HCl ⇨ 2NaCl + H2
Hydrogen gas and iron chloride are formed when hydrochloric acid reacts with iron.
Fe + 2HCl ⇨ FeCl2 + H2
Hydrogen gas and zinc sulphate are formed when zinc metal reacts with sulphuric acid
Zn + H2SO4 ⇨ ZnSO4 + H2
Answer:
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