객관식
Given the molecular formula , calculate the degree of unsaturation
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1. A Review of General Chemistry
Index of Hydrogen Deficiency (Structural)
객관식
What is the index of hydrogen deficiency (IHD) for the following molecule?
A
6
B
4
C
7
D
5
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검증된 단계별 안내1
Identify the molecular formula of the compound. The structure shows a benzene ring, a triple bond, and an epoxide. Count the number of carbon (C), hydrogen (H), and oxygen (O) atoms.
Calculate the IHD using the formula: IHD = (2C + 2 + N - H - X) / 2, where C is the number of carbons, N is the number of nitrogens, H is the number of hydrogens, and X is the number of halogens. Oxygen does not affect the IHD calculation.
Count the number of rings and multiple bonds in the structure. Each ring and each multiple bond (double or triple) contributes to the IHD.
Consider the benzene ring as contributing 4 to the IHD (3 double bonds and 1 ring).
Add the contribution from the triple bond, which is 2, to the IHD. Sum all contributions to find the total IHD.
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