Explanation and answers are greatly appreciated! For each of the following molec

Question

Explanation and answers are greatly appreciated!

For each of the following molecular formulas, calculate the degree of unsaturation (index of hydrogen deficiency). For each of the molecular formulas in a), state in words (i.e., do not draw structures) the possible arrangements of rings and/or double bonds and/or triple bonds (e.g., "one ring and two double bonds," etc.). A compound containing seven carbon atoms has a degree of unsaturation of What is its molecular formula? If you can add two moles of hydrogen for each mole of this compound, what arrangements of rings, double bonds, and triple bonds are possible?

Explanation / Answer

To calculate Degrees of Unsaturation (DoU)

If the molecular formula is given, plug in the numbers into this formula:

a) i) 2

    ii) 1

    iii) 0

    iv) 4

b) Ring and double bonds = 1 degree          Triple bond = 2 degrees

i) 2 double bonds, or 1 ring and 1 double bond, or 2 rings, or 1 triple bond

ii) 1 double bond or 1 ring

iii) no ring, no double bonds, and no triple bonds

iv) 1 ring and 3 double bonds, or 2 rings and 2 double bonds, or 3 rings and 1 double bond, or 4 double bonds, or 2 triple bonds, or 1 triple bond and 2 double bonds, or 1 triple bond, 1 double bond, and 1 ring, or 1 triple bond and 2 rings

c) i) C7H10

    ii) 1 triple and 1 ring, or 2 double bonds and 1 ring

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