Правильный ответ 4) серной кислотой и водородом
Ch3-ch2-ch2-ch(ch3)-ch(c2h5)-ch2-ch3
ch3-(ch3)c(ch3)-ch(ch3)-ch2-ch3
1. 4Zn + 10HNO3(разб.) = 4Zn(NO3)2 + NH4NO3 + 3H2O
Молекулярное:
3Zn(OH)2 + H3PO4 -> (ZnOH)3PO4 + 3H2O
Полное ионное:
3Zn(OH)2 + 3H(+)+PO4(-3) -> 3ZnOH(+)+PO4(-3) + 3H2O
Сокращенное ионное:
3Zn(OH)2 + 3H(+) -> 3ZnOH(+) + 3H2O
<span>K</span><span>HSO</span>₃<span> + KOH = К</span>₂<span>SO</span>₃<span> + H</span>₂<span>O
</span>K⁺ + HSO₃⁻ + K⁺ + OH⁻ = 2К⁺ + SO3²⁻ + H₂O
HSO₃⁻ + OH⁻ = SO₃²⁻ + H₂O
<span>Fe</span>₂<span>(SO</span>₄<span>)</span>₃<span> + 3(NH</span>₄<span>)</span>₂<span>S = Fe</span>₂<span>S</span>₃<span> + 3(NH</span>₄<span>)</span>₂<span>SO</span>₄<span>
</span>2Fe³⁺ + 3SO₄²⁻ + 6NH₄⁺ + 3S²⁻ = Fe₂S₃ + 6NH₄⁺ + 3SO₄²⁻
2Fe³⁺ + 3S²⁻ = Fe₂S₃