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Exothermic Reactions

Calculate the...

Question

Calculate the number of electrons lost or gained during the changes:
$B a C l_{2} + N a_{2} S O_{4} \to B a S O_{4} + 2 N a C l$

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Solution

Number of electrons gained $=$ number of electrons lost $= 0$ . This is double displacement reaction. In this reaction, none of the ions undergoes change in the oxidation number. None of the ions gains/loses electrons. Only cations and anions are exchanged in two compounds.

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