Which will not show common ion effect on addition of hcl among ch3cooh h2s c6h5cooh and h2so4?
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Correct option is 3) NH4OH and NH4Cl
Explanation : To the weak base, NH4OH, if NH4Cl is added which provides the common NH4+ ions, dissociation of NH4OH is suppressed.
NH4OH ⇔NH4+ + OH-
NH4Cl⇔NH4+ + Cl-
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