Question

H2S is less acidic than H2Te and also it is in gaseous state when compound with H2O.give reasons for these two observations

Answer 1

H2S has higher bond dissociation enthalpy and thus it requires more energy in order to break the bonds. Hence the tendency of H2S to release H+ is less and this makes H2S to be less acidic.

H2Te has less bond dissociation enthalpy and thus having high tendency of dissociating to release H+ hence it is more acidic.

Answer 2

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• ❤.. Due to the decrease in bond[E-H] dissociation enthalpy down the group, acidic character increases.