1. A Review of General Chemistry

Draw the structure of a hydrocarbon that has six carbon atoms and

a. three vinylic hydrogens and two allylic hydrogens.

b. three vinylic hydrogens and one allylic hydrogen.

c. three vinylic hydrogens and no allylic hydrogens.

Convert the structure into a line-angle structure. Be sure to assignALLnecessary formal and net charges.

Given the line-angle drawings shown, answer the following questions:

(i) How many carbons are in each molecule?

(ii) How many hydrogens are at the circled carbon?

(iii) Is the indicated (→) carbon or 1° , 2°, 3°, or 4°?

(f)

Convert the models in Problem 20 to skeletal structures.

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Some of the following molecular formulas correspond to stable compounds. When possible, draw a stable structure for each formula. Propose a general rule for the numbers of hydrogen atoms in stable hydrocarbons.

Give the molecular formula of each compound shown

(a)

(b)

(c)