Question

Li2S( aq ) + 2HCl( aq ) 2LiCl( aq ) + H2S( g )

Answer 1

$Li_2S_{(s)} + 2 HCl_{(aq)} \to H_2S_{(g)} + 2 LiCl_{(aq)}$

It is a double replacement reaction

A double replacement reaction takes place when two ionized compounds exchange ions to produce two new substances.