Na. ?? HS: Na 0 CH, THF 4. Species 1 is which of the following. Circle each corr
ID: 705422 • Letter: N
Question
Na. ?? HS: Na 0 CH, THF 4. Species 1 is which of the following. Circle each correct answer a. An acid b. A base c. A charged nucleophile d. An uncharged nucleophile e. A counterion f. Organic 8 A spectator 5. Species 2 is which of the following a. 1 b. 20 c. 3 d. 4° 6. of the structures 1 through 6, which is the least stable (highest energy) organic species? In one or two sentences give your reasoning. Which of the following statements is true? a. A base attacks and removes acidic hydrogens from substrates b. A base attacks and bonds to electron rich carbon atoms in substrates c. A base attacks and bonds to electron poor carbon atoms in substrates d. A nucleophile attacks and removes acidic hydrogens from substrates e. A nucleophile attacks and bonds to electron rich carbon atoms in substrates. f. A nucleophile attacks and bonds to electron poor carbon atoms in substrates 7. 8. Na* is which of the following. Circle each correct answer a. An acid b. A base c. A charged nucleophile e. A counterion f. Organic & A spectator Circle each correct statement concerning THE a. THF is the abbreviation for tetrahydrofuran b. THF is a reactant C, THF is an attacking species d. THF is a solvent e. THF is a transition state 9. f. THF is a cyclic etherExplanation / Answer
4) Option c, e, f and g. Species 1 has a charged nucleophile (HS-) as it bears a negative charge and a spectator as well as counterion Na+.
5) Species 2 is 1o i.e. primary halide
6) Species 4 is the least stable organic species as it is a transition state with central carbon atom bonded to five atoms i.e. exceeding its limit of four atom.
7) "A nucleophile attacks and bonds to electron poor carbon atoms in substrates" is the correct statement. The carbon atom is called electron poor because it is bonded to electron withdrawing halogen atom making it electron deficient.
8) Option e and g. Na+ is a counter ion which facilitates the removal of Br- during substitution.
9) Option a, d and f is correct. THF is tetrahydrofuran which is a cyclic ether used mostly as solvents
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