Алкин - вещество вида CnH(2n-2)
При гидратации происходит следующее: (Реакция Кучерова)
CnH(2n-2) + H2O --(HgSO4)--> CnH(2n)O
Итак:
Дано:
V(CnH(2n-2)) = 6.72 л
m(CnH(2n)O) = 17.4 г
CnH(2n-2) -- ?
6,72 л 17,4 г
CnH(2n-2) + H2O --(HgSO4)--> CnH(2n)O
22,4 л/моль (12n+2n-2) г/моль
n(CnH(2n-2)) = V(CnH(2n-2)) / Va = 6.72/22.4 = 0.3 моль
согласно уравнению реакции:
n(CnH(2n)O) = n(CnH(2n-2)) = 0,3 моль
M((CnH(2n)O) = 12n + 2n +16 = 14n + 16 (1)
m(CnH(2n)O) = M(CnH(2n)O) * n(CnH(2n)O) ==>
M(CnH(2n)O) = m(CnH(2n)O) / n(CnH(2n)O) (2)
Приравнивая (1) и (2), получаем:
14n + 16 = 17.4 / 0.3
откуда:
4n + 16 = 58 г/моль
n = 42/14 = 3
Следовательно, формула алкина выглядит так:
C3H4
или
С≡CH-CH3 - (пропил, он же метилацетилен)
А сама реакция:
С≡CH-CH3 + H2O --(HgSO4)--> CH3-CO-CH3
C3H4 или С≡CH-CH3 (пропил, он же метилацетилен)
Education is an important tool which is very useful in everybody’s life. Education is what differentiates us from other living beings on earth. It makes man the smartest creature on earth. It empowers humans and gets them ready to face challenges of life efficiently. With that being said, education still remains a luxury and not a necessity in our country. Educational awareness needs to be spread through the country to make education accessible. But, this remains incomplete without first analyzing the importance of education. Only when the people realize what significance it holds, can they consider it a necessity for a good life. In this essay on Education, we will see the importance of education and how it is a doorway to success.
Объяснение:
Поделитесь своими знаниями, ответьте на вопрос:
Можете написать 2 гомолога c5h10o2 и 2 изомера? заранее ))
СН3-СН2-СН2-СН2-СООН
СН3-СН2-СН(СН3)-СООН
СН3-СН(СН3)-СН2-СООН
СН3-С(СН3)2-СООН