Предмет: Химия, автор: irene000

Аминокислоты-амфотерные соединения. приведите уравнения реакций,доказывающих это.

Ответы

Автор ответа: Kitty35

Аминокислоты, как амфотерные соединения, сочетают свойства карбоновых кислот и органических оснований:

H2N-CH-COOH+NaOH = H2N-CH-COONa+H2O
R R
В результате взаимодействия аминокислоты с гидроксидом натрия образуется натриевая соль аминокислоты и вода

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1 … talks were difficult and they lasted for many hours.
the
an
-
a
2 Peter swims (well) of all.
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3 I think we can deliver the machines … four lots … 25 machines each … regular intervals … eight months

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4 He (to ask) a passerby to show him the way there
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5 As soon as he (to come) in London he wiil call his mother.
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6 Bell and C are interested … the Model 25 machines.
on
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7 She plays tennis (badly) than her friends.
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8 I do not know if the company (to give) us a discount.
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9 If Bell and Co (to agree) to buy 50 compressors we (to give) the British company a 5% discount.
will agree, will give
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10 He (to clarify) some business matters with the customers now.
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11 The film guaranteed the delivery … each lot … any delay.

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-, by
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12 When I arrived home yesterday Marta (to watch) TV.

was watching
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watched

13When I arrived in London it (to rain) heavily.
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14 There will be ...new concert hall in our district next month.

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a
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16 I (not to be) to the cinema for a long time.

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25 I (to call) you as soon as I come home.

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26Don't be angry ...me.

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