On warming with silver powder, chloroform is converted to acetylene as follows,
$ \underset{chloroform}{\mathop{2CHC{{l}_{3}}}}\,+\underset{\begin{smallmatrix} (silver \\ powder) \end{smallmatrix}}{\mathop{6Ag}}\,\xrightarrow[{}]{\Delta }6AgCl+\underset{acetylene}{\mathop{HC\equiv CH}}\, $