Question

why H2S is acidic while H2O is neutral

Answer 1

$\blue{\huge{\underline{because\: of\: the\: reactant\: of\: Sulphur\: and\: oxygen}}}$

Answer 2

hey mate ,

   here is your answer :)

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While H atom with S lacks H bonding and thus there bond can be broken very easily as compared to water. Thus due to this in H2O , H+ release is very difficult while H2S does it very easily and thus H2S becomes acidic. ... So H2S is only acid in water because it can only supply H+.