Question

Which of the following give(s) ethyne on reaction with water?

• A. Al2 (C2)3
• B. Al4 C3
• C. SrC2
• D. Mg2 C3

Answer 1

Answer: (A)

Al2 (C2)3

Answer 2

Compounds containing C22– gives ethyne on reaction with H2O.

+ 2H2O$\longrightarrow$Sr(OH)2 + CH º CH

Similary Al2(C2)3 gives ethyne.