Предмет: Химия, автор: willzxc

помогите!!!!! очень срочно нужно​!!! химия 8класс, задание закреплено!!!

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Автор ответа: viktorpolezaev62
1

1)  соли можно разделить на три группы: кислые, основные, средние средние: NaNO3;   кислые: Zn(HSO3)2,KHCO3; основные :Al(OH)SO4;

У кислых солей имеется водород; у основных гидроксильная группа; у основных кислотный осадок

NaNO3- нитрат натрия; Zn(HSO3)2 - гидро сульфит цинка; KHCO3 - гидро карбонат калия; Al(OH)SO4 - гидроксо сульфат алюминия

2) а) Al+CrCl3=AlCl3+Cr  б) AgNO3+HBr=HNO3+AgBr   в) Cu(NO3)2+K2S=2KNO3+CuS  г) Ni+Mg(NO3)2 = реакция не пойдёт

д)  NiSO4+Cu(OH)2=  Ni(OH)2+CuSO4

3) 2Mg+O2=2MgO

MgO+H2SO4=MgSO4+H2O

MgSO4+NaOH=Mg(OH)2+Na2SO4

Mg(OH)2+2HCl=MgCl2+2H2O

MgCl2+AgNO3=Mg(NO3)2+2AgCl

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