Dottolll of the scantron. 1) Which of the following structural formulas is an is

Question

Dottolll of the scantron. 1) Which of the following structural formulas is an isomer to n-hexane? (Assume that correet number of Hydrogen atoms are attached to each Carbon atom) A) C-C-C-c-CC B)C-C-C-C-C-c E) none of the above 2) Which of the following compounds will undergo an addition reaction? A) C3Hs B) C2H4 C) C2H6 D) all of the above E) none of the above 3) The reaction CH2-CH2 + Br2 CHB rCHBr would best be described as: A) substitution. B) combustion.C) addition. D) hydrogenation E) none of the above 4) Which of the following functional groups represents an alcohol? A)R CH B)R C-R C)RCOH D)R-C-OR E) none of the above 5) Ethyl propanoate is a(n): A) ether. B) carboxylic acid. C) ester. D) ketone. E) none of the above

Explanation / Answer

1.

Answer is (E).
n - represents straight chain (no branching).

2.

Answer is (B).
C2H4 has a chemical formula of CnH2n which is for an alkene.
Option (A) and (C) have a chemical formula of CnH2n+2 corresponding to an alkane.

3. Answer is (C).

Bromine is added across the double bond.

4.

Answer is (E).

Alcohol has a functional group consisting -OH with the alkyl group.

5.

Ethyl propanoate is an ester
The name of the parent chain from the carboxylic acid part of the ester with an –e remove and replaced with the ending –oate.

Answer is (C) ester.

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