July 2022 1 4 Report

С соляной кислотой реагируют все вещества группы :
1) H2SO4;NaOH;AgNO3
2) Zn;KOH;AgNO3
3)CU;KOH;AgNO3
4) HNO3; H2SO4;HBr


Почему? 

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