Предмет: Химия, автор: GaMeR069

Дана схема превращений:

CuSO4 → Cu(OH)2 → Cu(NO3)2 → Cu

Напишите уравнения реакций, с помощью которых можно осуществить указанные превращения. Для второго превращения составьте сокращенное ионное уравнение
реакции.

Ответы

Автор ответа: mentossscolaa

Ответ:

1) CuSO4 + 2NaOH = Na2SO4 + Cu(OH)2

2)Cu(OH)2↓ + 2HNO3 = Cu(NO3)2 + 2H2O

Cu(OH)2↓ = Cu(2+) + 2OH(-)

3) Cu(NO3)2 = Cu + O2 + 2NO2

Объяснение:

степень окисления в скобках

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: stepa57

5. Alice Grows Again
Suddenly, Alice heard footsteps. She looked up and saw the rabbit again. He was very worried. "Oh dear! Where are they?” he said. “The Duchess is going to be very angry! Where did I drop them?”
“He’s looking for his fan and gloves,” thought Alice.
She looked for them, too, but they were back in the room with the glass table, and she didn’t know where that was any more.
Just then, the rabbit saw Alice. "Mary Ann!” he shouted. “Why are you here? Go home right now and find me a pair of gloves and a fan!”
"He thinks I’m his maid!” thought Alice, but she was too scared to say anything.
She ran away and soon saw a little house, with the name “W. RABBIT” on the door.
She went inside and ran upstairs. In the tiny bedroom, she saw a table with a fan and some white gloves on it. There was also a little bottle. Alice picked it up.
“I'm tired of being so small,” she thought. “I wonder what this dnnk does.” Alice drank the drink.
“Oh! I’m growing again!” said Alice, as her head hit the ceiling. But this time, she grew even bigger. She sat on the floor, with one arm out of the window and one foot up the chimney. She was very unhappy.
"How can I get out of here now?” she thought.
Just then, Alice heard the rabbit.
"Mary Ann!" he shouted. “Where are my gloves and fan?"
The rabbit ran up the stairs and tried to open the bedroom door.
“Hmm!” said the rabbit. "There’s something inside. Never mind. I can go through the window."
The rabbit ran outside again and looked up at the bedroom window.
“Pat! Bill!" he shouted. “What is that in the bedroom window?”
“It’s an arm, sir!” said another voice.
“Well, take it out of my window!” shouted the rabbit.
Pat the guinea pig tried to get through the window, but Alice moved her arm and he fell down again.
Then Bill the lizard tried to get down the chimney, but Alice moved her leg and he flew out again.
Next, Pat and Bill threw- stones at Alice through the window. When the stones landed on the floor, they changed into little cakes. Alice ate one of the cakes, and started to get smaller.
"Wonderful!” she said. “I’m just the right size!” She put some cakes in her pocket and went downstairs. She ran out of the house, across the garden and into a wood.

2 года назад

Предмет: Українська література, автор: Юличка281

коротка характеристика чіпки

2 года назад

Предмет: Английский язык, автор: dododo

Помогите перевести на англ БЕЗ ПЕРЕВОДЧИКА ГРАМОТНО!!!!

В субботу я проснулась очень рано. После того как я позавтракала, я начала убирать мою комнату. В обед я посетила концерт, посвященный Дню города. Вечером я гуляла по красивым улицам, слушая музыку. Этот день закончился красочным и ярким салютом в честь праздника.

2 года назад

Предмет: Математика, автор: kadyrcaryew654

Почтальон должен разнести по адресам 8 писем. Он уже разнёс 6 писем. Сколько писем ему еще надо разнести?
ЛЮДИ ПОМОГИТЕ МНЕ ПРАВИЛЬНО НАПИСАТЬ УСЛОВИЕ ЭТОЙ ЗАДАЧИ.УСЛОВИЕ ОЧЕНЬ НАДО КАК ЕГО ПРАВИЛЬНО НАПИСАТЬ

8 лет назад

Предмет: Химия, автор: markindanilovv51q

Определите,какой объем водорода(н.у) необходимо для восстановления 128г меди из оксида меди(II) c Дано

8 лет назад