Предмет: Химия, автор: Mary2012

На основе представлений об электронных орбиталях поясните , каково строение функциональных групп альдегидов и чем оно отличается от строения функциональных групп спиртов.

Ответы

Автор ответа: ChemistryHelper
0
Химические связи в альдегидной группе образуются за счет орбиталей атома углерода и 2р-орбиталей атома кислорода.Атом углерода карбонильной группы находится в состоянии sp2-гибридизации.  Вот все, что я знаю. Ну а в спирте там все просто : Радикал и -О-Н
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Вариант 3
Часть A. Выберите вариант ответа. Choose the right answer

1) There are some… in the fridge.
a) milk
b) milks
c) milkens
2) This girl is…my sister.
a) am
b) is
c) are
3) … are little boys.
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5) It…not my pencil.
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6) The task…easy.
a) am
b) is
c) are
7) Are… from Russian?
a) we
b) you
c) I
8) …is your fault.
a) it
b) I
c) you
9) …is not my friend.
a) it
b) she
c) I
10) Our cat… very old.
a) am
b) was
c) were
12) He is sitting…the table
a) at
b) on
c) in

13) The book is…the bag
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b) on
c) in

14) The dog is laying…the sofa
a) at
b) on
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15) He is…school now.
a) at
b) on
c) in

16) Bear is…than wolf.
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17) This book is…of all I’ve ever read.
a) interesting
b) more interesting
c) the most interesting

18) Philip is very…
a) cleverer
b) the cleverest
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19) Nick is… student in the class.
a) good
b) better
c) the best

20) Last week we…a new car.
a) bought
b) buy
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21) They often…the dishes.
a) washes
b) washed
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22) He … exam next week.
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23) Did the boy … his mother last week?
a) not help
b) help
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24) You … this book tomorrow.
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b) reads
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25) She always … her grandmother.
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26) There were 5 …in the room.
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27)I’ll come …10 o’clock
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b) on
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28)The Victory day is … the ninth of May
a) at
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29) I wasn’t born … April.
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