Chemistry, 09.12.2020 20:50 alexkrol30083

(CESPE, 2009) Julgue os itens a seguir, relacionados com mecanismos de reações orgânicas. I. Nas reações de adição eletrofílica em alcenos, há a formação de um intermediário radical. II. A estabilidade de intermediários carbocátions está relacionada aos efeitos de hiperconjugação e indutivo. Carbocátions terciários são mais estáveis que os secundários, que são mais estáveis que os primários. III. Nas reações de substituição nucleofílica bimolecular ou de segunda ordem (SN2), ocorre a formação de um intermediário carbocátion. IV. Os compostos aromáticos fazem reações de substituição eletrofílica, contrariamente aos alcenos, que fazem reações de adição eletrofílica. Estão CERTOS apenas os itens: Grupo de escolhas da pergunta I e IV. II e III. I e III. II e IV. III e IV.

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 05:40

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Answers: 1

Answer

Chemistry, 22.06.2019 12:00

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Answers: 3

Answer

Chemistry, 22.06.2019 17:00

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

Answers: 1

Answer

Chemistry, 22.06.2019 18:50

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space

Answers: 3

Answer

You know the right answer?

(CESPE, 2009) Julgue os itens a seguir, relacionados com mecanismos de reações orgânicas. I. Nas rea...

Questions

Chemistry, 26.06.2020 16:01

How many moles of h2 can be formed if a 3.25g sample of Mg reacts with excess HCl...

Chemistry, 26.06.2020 16:01

Justin is planning his science fair project. He wants to measure how oxygen levels affect the rate of photosynthesis in plants. Is this an example of...