[" 81.An aqueous solution contains "0.10MH_(2)S" and "],[0.20MHCl" .If the equilibrium constant for the "],[" formation of "HS^(-)" from "H_(2)S" is "1.0times10^(-7)" and that "],[" of "S^(2-)" from "HS^(-)" ions is "1.2times10^(-13)" then the "],[" concentration of "S^(2-)" ions in aqueous solution is "]

An aqueous solution contains 0.10 MH_2 S and 0.20 M HCl if the equilibrium constants for the formation of HS^(-) " from " H_2S " is " 1.0 xx 10^(-7) and " that of " S^(2-) " from " HS^(-) ions is 1.2 xx 10 ^(-13) then the concentration of S^(2-) ions in aqueous solution is 5 xx 10 ^(-8) 3 xx 10 ^(-20) 6 xx 10 ^(-21) 5 xx 10 ^(-19)

An aqueous solution contains 0.10 M H_(2) S and 0.20 M HCl . If the equilibrium constants for the formation of HS^(-) from H_(2) S is 1.0 xx 10^(-7) and that of S^(2-) from HS^(-) ions is 1.2 xx 10^(-13) then the concentration of S^(2-) ions in aqueous solution is -

An aqueous solution contains 0.10 M H_(2)S and 0.20 M HCl. If the equilibrium constants for the formation of HS^(–) from H_(2)S is 1.0xx10^(–7) and that of S^(2-) from HS^(–) ions is 1.2xx10^(–13) then the concentration of S^(2-) ions in aqueous solution is

An aqueous solution contains 0.10 M H_(2)S and 0.20 M HCl. If the equilibrium constants for the formation of HS^(–) from H_(2)S is 1.0xx10^(–7) and that of S^(2-) from HS^(–) ions is 1.2xx10^(–13) then the concentration of S^(2-) ions in aqueous solution is

An aqueous solution contains 0.10 (M) H_2S and 0.20 (M) HCl. If the equilibrium constants for the formation of HS^- from H_2S is 1.0xx10^(-7) and that of S^(2-) from HS^- ions is 1.2xx10^(13) , then the concentration of S^(2-) ions in aqueous solution is-