Question

Name the radicals present in nh4cl

Answer 1

Ammonium hydroxide is answer .

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Answer 2

In salt analysis, NH4Cl is added in sufficient amount before adding NH4OH because otherwise the cations of higher group may get precipitated in group III.Reason: NH4Cl is strong electrolyte, it decomposes completely. While the NH4OH is weak base it does not ionises completely. Thus due to presence of common ion NH4+ in NH4Cl, it supresses the ionisation of weak base NH4OH in order to decrease the OH- concentration so that higher group cations will not get precipitated.