The list gives four experiments done with calcium carbonate. 1 acid added 2 alkali added 3 heated strongly 4 water added Which experiments produced carbon dioxide?
A
1 and 2
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B
1 and 3
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C
2 and 3
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D
2 and 4
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Solution
The correct option is A1 and 3
Solution:- (B) 1 and 3
Calcium carbonate is a salt of a strong base and weak acid and thus considered as a mild base.
Hence, being a base, it can produce carbon dioxide on reaction with acid.
CaCO3+2HCl⟶CaCl2+CO2↑+H2O
Calcium carbonate can also produce carbon dioxide on heating.