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  4. In the detection of III group basic radicals, NH4OH is added after NH4Cl to

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Q. In the detection of III group basic radicals, $NH_4OH$ is added after $NH_4Cl$ to

COMEDKCOMEDK 2009Organic Chemistry – Some Basic Principles and Techniques

Solution:

$NH_4OH$ suppresses the degree of dissociation of $NH_4Cl$ hence the concentration of $OH^-$ ions in the solution decreases appreciably. Due to this, only group Ill hydroxides are precipitated having low solubility product.