Which reaction does not involve neutralization? A. H 2 SO 4 + 2NH 3 -------> (NH 4 ) 2 SO 4 B. H 2 SO 4 + BaCl 2 --------> BaSO 4 + 2HCl C. H 2 SO 4 + CuO -----> CuSO 4 + H 2 O D. H 2 SO 4 + 2NaOH ----> Na 2 SO 4 + 2H 2 O