Assertion : In the third group of qualitative | vedclass

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(C) The Assertion is true because $NH_4Cl$ is added to $NH_4OH$ to provide a common ion $(NH_4^+)$,which suppresses the dissociation of $NH_4OH$ due t

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If the Assertion is correct but Reason is incorrect.

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(C) The Assertion is true because $NH_4Cl$ is added to $NH_4OH$ to provide a common ion $(NH_4^+)$,which suppresses the dissociation of $NH_4OH$ due to the common ion effect.This reduction in the concentration of $OH^-$ ions ensures that only the hydroxides of the third group cations (like $Fe^{3+}$,$Al^{3+}$,$Cr^{3+}$) are precipitated,preventing the precipitation of hydroxides of subsequent groups.The Reason is false because the purpose is not to convert ions into chlorides,but to control the $OH^-$ concentration for selective precipitation.

Assertion : In the third group of qualitative analysis,$NH_4Cl$ is added to $NH_4OH$ medium.
Reason : This is to convert the ions of group into their respective chlorides.

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Assertion : In the third group of qualitative analysis,$NH_4Cl$ is added to $NH_4OH$ medium.Reason : This is to convert the ions of group into their respective chlorides.