А) <span>Si + 2NaOH + H</span>₂<span>O </span>⇒<span> Na</span>₂<span>SiO</span>₃<span> + 2H</span>₂↑
Б) Si + 2H₂↑ = SiH₄
Верный ответ: Верны оба суждения.
Э(элемент)2О(оксид)7
HЭ(элемент)
2Cu + O2 = 2CuO
4Cu + 3O2 = 2Cu2O3
4Al + 3O2 = 2Al2O3
N2 + O2 = 2NO
N2 + 2O2 = 2NO2
2K + Br2 = 2KBr
2Na + Br2 = 2NaBr
2Cu + Br2 = 2CuBr
Cu + Br2 = CuBr2
2Al + 3Br2 = 2AlBr3
O2 + 2F2 = 2OF2
N2 + F2 = N2F2 (~ 2NF)
N2 + 2F2 = N2F4 (~ 2NF2)
N2 + 3F2 = 2NF3
Cu + F2 = CuF2
Si + S = SiS
Si + 2S = SiS2
Zn + S = ZnS
Fe + S = FeS
2Al + 3S = Al2S3