Предмет: Химия, автор: nicolri

Осуществите следующие превращения, составьте уравнения реакций:
Fe203 → Fe → FeCl3→ Fe(OH)3 → Fe2(SO4)3

Уравняйте первую реакцию методом электронного баланса,
укажите окислитель и восстановитель

Ответы

Автор ответа: dyexfnf

Ответ:

Объяснение:

Fe₂O₃ → Fe → FeCl₃→ Fe(OH)₃ → Fe₂(SO₄)₃

1) Fe₂O₃ + 3H₂ = 2Fe + 3H₂O

2) 2Fe + 3Cl₂ = 2FeCl₃

3) FeCl₃ + 3 NaOH = Fe(OH)₃ + 3NaCl

4) 2Fe(OH)₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 6H₂O

Метод электронного баланса

Fe₂⁺³O₃ + H₂⁰ = Fe⁰ + H₂⁺O

восстановитель H₂⁰ - 2ē = 2H⁺ | 3 процесс окисление

окислитель Fe⁺³ + 3ē = Fe⁰ | 2 процесс восстановление

Fe₂O₃ + 3H₂ = 2Fe + 3H₂O

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Poverty

There is no objective and unique definition of poverty, which is capable to

describe exactly when somebody is poor. There has been an evolution in the

description of poverty. In these definitions, it is shown that poverty is not only lack of

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1.приводить к разным результатам;

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poverty; relative poverty an absolute poverty line; primary poverty; poor.

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3. … demonstrates the cultural needs of individuals and families within the

context of the rest of society.

4. … exists for many centuries and can be defined in different ways.

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1. There is no objective and unique definition of poverty, which demonstrates

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3. People are defined as “poor” when they can not sufficiently satisfy some of

their absolute needs.

4. Most discussions distinguish between absolute or primary poverty and

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1. Absolute
poverty
2. Relative
poverty
3. hot line
4. poverty
line
5. bread line

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c)… is a procedure for distributing to needy people some products

that cannot be sold on the open market as they do not meet the

optimal quality standards.

d)… is lack of the basic requirements to sustain physical life.

e)… is a measure of the amount of money a government or a society

believes is necessary for a person to live at a minimum level of

subsistence.

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2. Does the content of the notion “poverty” differ from country to country and from time to time?

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