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undertaker81298
@undertaker81298
October 2021
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S --> H2SO4 --> H2S --> KHS --> H2S --> Na2S --> CuS
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Анетка125
S+6HNO3=H2SO4+6NO2
↑
+2H2O
5H2SO4+4Zn=4ZnSO4+H2S
↑
+4H2O
H2S+KOH=KHS+H2O
KHS+HCl=KCl+H2S
↑
H2S+2NaOH=Na2S+2H2O
Na2S+Cu(NO3)2=2NaNO3+CuS↓
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Answers & Comments
5H2SO4+4Zn=4ZnSO4+H2S↑+4H2O
H2S+KOH=KHS+H2O
KHS+HCl=KCl+H2S↑
H2S+2NaOH=Na2S+2H2O
Na2S+Cu(NO3)2=2NaNO3+CuS↓