Вопрос школьника по предмету Химия
Разложите на ионы:
1.Zn+2HCL—>ZnCL2+H2
2.K2O+H2SO4—>K2SO4+H2O
4.BaCL2+H2SO4—>BaSO4+2HCL
5.Al(OH)3+3HNO3—>Al(NO3)3+3H2O
7.AgNO3+HCL—>AgCL+HNO3
8.2KOH+H2S—>K2S+2H2O
Ответ учителя по предмету Химия
Zn + 2HCl -> ZnCl2 + H2
Zn(0) + 2H(+) + 2Cl(-) -> Zn(+2) + 2Cl(-) + H2(0)
Zn(0) + 2H(+) -> Zn(+2) + H2(0)
K2O + H2SO4 -> K2SO4 + H2O
K2O + 2H(+) + SO4(-2) -> 2K(+) + SO4(-2) + H2O
K2O + 2H(+) -> 2K(+) + H2O
BaCl2 + H2SO4 -> BaSO4 + 2HCl
Ba(+2) + 2Cl(-)+ 2H(+) + SO4(-2) -> BaSO4 + 2H(+) + 2Cl(-)
Ba(+2) + SO4(-2) -> BaSO4
Al(OH)3 + 3HNO3 -> Al(NO3)3 + 3H2O
Al(OH)3 + 3H(+) + 3NO3(-) -> Al(+3) + 3NO3(-) + 3H2O
Al(OH)3 + 3H(+) -> Al(+3) + 3H2O
AgNO3 + HCL -> AgCl + HNO3
Ag(+) + NO3(-) + H(+) + Cl(-)-> AgCl + H(+) + NO3(-)
Ag(+) + Cl(-) -> AgCl
2KOH + H2S -> K2S + 2H2O
2K(+) + 2OH(-) + 2H(+) + S(-2) -> 2K(+) + S(-2) + 2H2O
2H(+) + 2OH(-) -> 2H2O
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Перепишите следующие предложения в косвенной речи, сделав все необходимые преобразования.
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