Molecules of which two substances each contain a multiple covalent bond?

Regents Chemistry Exam January 2025 Question 25

25 Molecules of which two substances each contain a multiple covalent bond?

(1) ethene and ethane

(2) ethene and ethyne

(3) methane and ethane

(4) methane and ethyne

Solution:

Table Q on the Reference Table lists Homologous Series of Hydrocarbons. We can see that alkenes and alkynes have multiple bonds, while alkanes do not. Therefore, choice 2 is the correct answer

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