в пробирку с осадком гидроксида меди (II) добавляем раствор серной кислоты.что наблюдаем?вывод уравнение реакции.

Insert the article where it is aecessary
1. No news is .... good news
2. This is ..... expensive ring
3. I have always wanted to visit .......Sahara Desert
4. Most children like .... cartoons
5. I like sales at .... Harrods, you can buy many things there