Cyclobutadiene ( 1 ) can be hydrogenated to give cyclobutane ( 2 ). Similarly, c

Question

Cyclobutadiene (1) can be hydrogenated to give cyclobutane (2). Similarly, cyclobutene (3) also can be hydrogenated to give cyclobutane.

AHH (cyclobutene) AHH (cyclobutadiene) H H2 Which statement is accurate? You can ignore differences in angle strain between 1 and 3 for the purposes of this comparison. Select one: O a. the magnitude of AHH for cyclobutadiene 2 x the magnitude of AHH for cyclobutene. O b. the magnitude of AHH for cyclobutadiene 2xthe magnitude of AHH for cyclobutene. O C. the magnitude of AHH for cyclobutadiene 2 the magnitude of AHH for cyclobutene.

Explanation / Answer

a. The magnitude of deltaHH for cycobutadiene = 2xthe magnitude of deltaHH for cyclobutene.

Becuase 2 moles of H2 required for cyclobutadien whereas one mole H2 required for cyclobutene for hydrogenation.

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