Question

How will you find out redox reaction in double displacement reaction because there is no loss or gain of valancy

Answer 1

Answer:

by having Oxygen and hydrogen replacement theory

Answer 2

Answer:

For it to be a redox reaction, elements have to change oxidation states and that does not happen in double replacement reactions.

E.g AgNO3+NaCl→AgCl+NaNO3

Ag is +1 before and after the reaction;

Na is +1 before and after the reaction too;

Both NO3 and Cl are -1 before and after the reaction;

Therefore, it is not a redox reaction.

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