What is the hydrogen deficiency index for a compound with a molecular formula of C₆H₁₁N? A) 1 B) 2 C) 3 D) 4

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Quizplus · Accepted Answer

The hydrogen deficiency index (HDI) or degree of unsaturation is a count of how many molecules of H2 need to be added to a structure to convert it to a saturated, acyclic species. The formula for calculating HDI is: HDI = 1 + 0.5 * (2C + 2 + N - H - X), 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. For the given molecular formula, which simplifies to C111H111N, the calculation is: HDI = 1 + 0.5 * (2*111 + 2 + 1 - 111) = 1 + 0.5 * (224) = 1 + 112 = 113. However, given the options do not match this calculation, it seems there was a misunderstanding in interpreting the formula. Assuming a simpler interpretation meant to calculate based on a typical formula, the correct HDI calculation method involves understanding the structure's unsaturation level. Without the exact counts of C, H, and N, a direct calculation can't be provided here, but the principle involves counting double bonds, rings, and other elements that contribute to unsaturation.

What Is the Hydrogen Deficiency Index for a Compound with a Molecular