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Olgaarefeva20
@Olgaarefeva20
August 2022
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Iro4kash
1)
H2SO4+Zn=ZnSO4+H2↑
ZnSO4+2HCl=ZnCl2+H2SO4
ZnCl2+2HNO3=Zn(NO3)2+2HCl
Zn(NO3)2=ZnO+N2O5
2)
Cr+H2SO4=Cr2(SO4)3+H2↑
Cr2(SO4)3+6HNO3=2Cr(NO3)3+3H2SO4
Cr(NO3)3+3HCl=CrCl3+3HNO3
CrCl3+3KOH=Cr(OH)3+3KCl
3)
CuCl2+H2SO4=CuSO4+2HCl
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2+2HNO3=Cu(NO3)2+2H2O
Cu(NO3)2=Cu+3NO2
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Answers & Comments
H2SO4+Zn=ZnSO4+H2↑
ZnSO4+2HCl=ZnCl2+H2SO4
ZnCl2+2HNO3=Zn(NO3)2+2HCl
Zn(NO3)2=ZnO+N2O5
2)
Cr+H2SO4=Cr2(SO4)3+H2↑
Cr2(SO4)3+6HNO3=2Cr(NO3)3+3H2SO4
Cr(NO3)3+3HCl=CrCl3+3HNO3
CrCl3+3KOH=Cr(OH)3+3KCl
3)
CuCl2+H2SO4=CuSO4+2HCl
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2+2HNO3=Cu(NO3)2+2H2O
Cu(NO3)2=Cu+3NO2