(B) The hydrolysis of $Al_2S_3$ is represented by the reaction: $Al_2S_3 + 6H_2O \rightarrow 2Al(OH)_3 + 3H_2S$. $H_2S$ (hydrogen sulfide) is a well-k

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(B) The hydrolysis of $Al_2S_3$ is represented by the reaction: $Al_2S_3 + 6H_2O \rightarrow 2Al(OH)_3 + 3H_2S$. $H_2S$ (hydrogen sulfide) is a well-known acidic gas. In contrast,$Li_2NH$ releases $NH_3$ (basic),$CaC_2$ releases $C_2H_2$ (neutral/weakly acidic),and $CaNCN$ releases $NH_3$ (basic).