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viktoriasulima6
@viktoriasulima6
July 2022
1
9
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Напишите ox-red этих уравнений:
1) CuS+HNO3=Cu(NO3)2+NO+S+H2O
2)S+HNO3=H2sO4+NO2+H2O
3)P+HNO3+H2O=H3PO4+NO
4)KClO3+HCl=KCl+Cl2+H2O
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alima1958
Verified answer
⁺²⁻² ⁺¹ ⁺⁵ ⁻² ⁺² ⁺⁵ ⁻² ⁺² ⁻² ⁰ ⁺¹ ⁻²
1) 3CuS+8HNO3=3Cu(NO3)2+2NO+3S+4H2O
S ⁻² -2e ⇒ S⁰ Ι3 восст-ль
N⁺⁵+3e⇒ N⁺² Ι2 окисл-ль
⁰ ⁺¹ ⁺⁵ ⁻² ⁺¹ ⁺⁶ ⁻² ⁺⁴ ⁻² ⁺¹ ⁻²
2)S+6HNO3=H2SO4+6NO2+2H2O
⁰ ⁺⁶
S-6e⇒S Ι1 вос-ль
⁺⁵ ⁺⁴
N -1e⇒ N Ι6 окис-ль
⁰ ⁺¹ ⁺⁵ ⁻² ⁺¹ ⁻² ⁺ ¹ ⁺⁵ ⁻² ⁺²⁻²
3)3P+5HNO3+2H2O=3H3PO4+5NO
⁰ ⁺⁵
Р -5е⇒ Р Ι3 восст-ль
⁺⁵ ⁺²
N +3e⇒ N Ι5 окис-ль
⁺¹⁺⁵ ⁻² ⁺¹ ⁻¹ ⁺¹ ⁻¹ ⁰ ⁺¹ ⁻²
4)2KClO3+12HCl=2KCl+6Cl2+6H2O
⁺⁵ ⁻¹
СI +6e⇒ CI Ι 1окис-ль
⁻¹ ⁰
CI -1e⇒C I 6 восст-ль
2 votes
Thanks 1
viktoriasulima6
Спасибки))
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Answers & Comments
Verified answer
⁺²⁻² ⁺¹ ⁺⁵ ⁻² ⁺² ⁺⁵ ⁻² ⁺² ⁻² ⁰ ⁺¹ ⁻²1) 3CuS+8HNO3=3Cu(NO3)2+2NO+3S+4H2O
S ⁻² -2e ⇒ S⁰ Ι3 восст-ль
N⁺⁵+3e⇒ N⁺² Ι2 окисл-ль
⁰ ⁺¹ ⁺⁵ ⁻² ⁺¹ ⁺⁶ ⁻² ⁺⁴ ⁻² ⁺¹ ⁻²
2)S+6HNO3=H2SO4+6NO2+2H2O
⁰ ⁺⁶
S-6e⇒S Ι1 вос-ль
⁺⁵ ⁺⁴
N -1e⇒ N Ι6 окис-ль
⁰ ⁺¹ ⁺⁵ ⁻² ⁺¹ ⁻² ⁺ ¹ ⁺⁵ ⁻² ⁺²⁻²
3)3P+5HNO3+2H2O=3H3PO4+5NO
⁰ ⁺⁵
Р -5е⇒ Р Ι3 восст-ль
⁺⁵ ⁺²
N +3e⇒ N Ι5 окис-ль
⁺¹⁺⁵ ⁻² ⁺¹ ⁻¹ ⁺¹ ⁻¹ ⁰ ⁺¹ ⁻²
4)2KClO3+12HCl=2KCl+6Cl2+6H2O
⁺⁵ ⁻¹
СI +6e⇒ CI Ι 1окис-ль
⁻¹ ⁰
CI -1e⇒C I 6 восст-ль