Question

Double displacement reaction with evolution of gas

Answer 1

Answer:

Double displacement reaction is a type of chemical reaction in which the positive ions (cation) and the negative ions (anion) of the two reactant switch places, forming two new compounds or products.

ex: CaCo3 (s) + 2Hcl (aq ) ------> CaCl2 (aq) + Co2 (g) +H2O (l).

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