Question Detail

CHM 102 Practice Questions Objective Question

Question

Which of the following compounds reacts with ammoniacal cuprous chloride to give a precipitate?
Options
A 1-Butene
B 1-Butyne
Correct Answer
C 2-Butene
D 2-Butyne
Correct Answer

Option B is the correct answer.

Detailed Explanation

1-Butyne (terminal alkyne) reacts with ammoniacal cuprous chloride (Cu2Cl2 in NH4OH) to form a red precipitate (copper acetylide). Alkenes and internal alkynes do not react.

Hint

Which compound is a terminal alkyne?

Question Info