Предмет: Химия, автор: nargizasher1980

Запишите уравнение реакции позволяющих осуществить следующие превращения :​

Приложения:

Ответы

Автор ответа: m1m210
3

Ответ:

2Cu + O2 → 2CuO

CuO + H2 → Cu + H2O

Для получения Cu(OH)2 из Cu необходимо две стадии:

Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O

CuSO4 + 2KOH → Cu(OH)2 + K2SO4

Для получения Cu из Cu(OH)2 необходимо две стадии:

Cu(OH)2 → CuO + H2O

CuO + H2 → Cu + H2O

Cu + Cl2 → CuCl2

CuCl2 → Cu + Cl2 (электролиз)

CuO + 2HCl → CuCl2 + H2O

CuCl2 + 2NaOH → CuO + H2O + 2NaCl

Cu(OH)2 + 2HCl → CuCl2 + 2H2O

CuCl2 + 2NaOH → Cu(OH)2 + 2NaCl

Fe2(SO4)3 + 3BaCl2 → 2FeCl3 + 3BaSO4↓

2FeCl3 + 3H2SO4 → Fe2(SO4)3 + 6HCl

Fe2(SO4)3 → Fe2O3 + 3SO3

Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O

Fe2(SO4)3 + 6 KOH → 2 Fe(OH)3 + 3 K2SO4

2Fe(OH)3 + 3H2SO4 → Fe2(SO4)3 + 6H2O

3NaOH + FeCl3 → Fe(OH)3 + 3NaCl

Fe(OH)3 + 3HCl → FeCl3 + 3H2O

2Fe(OH)3 ⇄ Fe2O3 + 3H2O


kkaammiillaaddaa: Спасибо большое
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Срочно нужен перевод
DAILY BREAD
Miss Martha was 40 years old but she was not married. She had her own shop where she sold bread, both fresh and stale which was cheaper.
There was a customer who called at her shop two or three times a week. The man was not young but he was very pleasant. He wore cheap clothes but they always looked nice on him. He always bought stale bread and never fresh. Miss Martha decided that he was very poor.
She often thought of him and was always sorry that she couldn’t invite him to have dinner with her. She wanted to talk to him, to know more about him. She liked the man and began wearing her best dress. She wanted to help the poor man but didn’t know how to do it.
Once when her customer called on her to buy stale bread, Miss Martha had an idea and a good one, as she thought, to help him. She put some butter in the stale bread.
The next day two men came into the shop. One of them was her customer and the other – a young man. The customer was very angry and couldn’t speak to her. So the young man told Miss Martha everything. “We work together in the same office”, he said. “We use stale bread to take away to pencil lines from our plans. We have worked at a plan of a new district for six months. We finished it this morning and began taking away pencil lines from it with your bread. You see, as there was butter in the bread the plan is good for nothing, and we can’t show this plan to anybody now.”
When the men left, Miss Martha went to her room, took off her best dress and put on her old one.
O`Henry