In the reaction,P_2O_5 + 3CaO to Ca_3(PO_4)_2 | vedclass

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(A) In metallurgy,a flux is a substance added to remove impurities by forming a fusible slag. $P_2O_5$ is a non-metallic oxide,which is acidic in natu

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Acidic flux

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(A) In metallurgy,a flux is a substance added to remove impurities by forming a fusible slag. $P_2O_5$ is a non-metallic oxide,which is acidic in nature. $CaO$ is a metallic oxide,which is basic in nature. In the given reaction,$P_2O_5$ reacts with the basic impurity $CaO$ to form a slag,$Ca_3(PO_4)_2$. Since $P_2O_5$ is acidic and is used to remove a basic impurity,it acts as an acidic flux.

In the reaction,$P_2O_5 + 3CaO \to Ca_3(PO_4)_2$,$P_2O_5$ acts as......

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