1) какой объем этана(у.н.) образуется при гидрировании 2, 24 л этилена 2) сколько г хлорэтана образуется при взаимодействии 11, 2 л (у.н.) этена с хлороводородом заранее )

1) ch2=ch2 + h2 -> h3c-ch3 

 

n(ch2=ch2)=2.24л/22,4л/моль=0,1моль

n(ch2=ch2)=n(h3c-ch3 )

v(h3c-ch3 )=0.1моль*22,4л/моль=2,24л

 

2)  сн2=сн2 + нсl -> сн3-сн2сl

 

n(сн2=сн2)=11.2л/22,4л/моль=0,5моль

n(сн2=сн2)=n(сн3-сн2сl)

m(сн3-сн2сl)=0.5моль*64,5г/моль=32,25г

It is difficult to imagine our life without shopping. On one hand, it’s one of quite important household tasks. Moreover, shopping is the way to get necessary food and clothes. So, if you don’t do it you can’t have all things which make your life so comfortable.

On the other hand, it’s believed that for the vast majority of people going shopping is not just duty or necessity but a real pleasure. As far as I know there is so called shopping therapy that helps people to reduce stress buying different goods or even just going window shopping.

As for me, I don’t belong to such group of people. Shopping doesn’t make me happy and sometimes it can even become a nightmare. When I can’t find things which I need, I can get annoyed and even stressed. Thus, I go shopping only when I don’t have any other choices. I usually go to a supermarket to buy some food once or twice a week. There is a huge shopping center near my house, so I can buy everything I need in one place. From time to time when I need something urgently I can look in a local shop nearby. I normally go shopping alone, that’s why I can do it quickly and effectively. I always make a shopping list before going.

Nowadays it’s becoming more and more popular to shop online. I’m firmly convinced that it’s the most comfortable way. You just surf the Internet and look through the enormous range of goods. Moreover, you can compare prices and find a real bargain. Also, you can have your purchases delivered. It’s amazingly easy and saves a lot of time and energy.

Thus, if you’re not a fan of shopping like me, do it online.

1)сначала найдем уксусную кислоту добавим nahco3  в пробирках где спирты, реакция не пойдет, а вот с укус к-той пойдет h3c-cooh+ nahco3 =h3c-coona + co2 + h2o в пробирке, где к-та, мы увидим бурное выделение газа 2) далее найдем глицерин к двум пробиркам добавим cu(oh)2 там где глицерин пробирка станет синей  (см на фото реакцию) 3) добавим к оставшей пробирке cuo чтобы точно доказать, что там спирт h3c-ch2-oh+cuo = h3c-coh+cu +h2o (в пробирке появится красно-кирпичный цвет/ цвет меди)