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A solution of NH4Cl (ammonium chloride) in water is:
ANeutral (pH = 7) because it is a salt
BBasic (pH > 7) from chloride hydrolysis
CAcidic (pH < 7) due to NH4+ hydrolysis
DStrongly basic (pH > 12)
Answer & Solution
Correct answer: C. Acidic (pH < 7) due to NH4+ hydrolysis
NH4Cl = salt of WEAK base (NH4OH) + STRONG acid (HCl). NH4+ undergoes hydrolysis: NH4+ + H2O → NH3 + H3O+, producing acidic solution (pH < 7). Cl- (conjugate of strong HCl) doesn't hydrolyze.
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