K_(a_(1)), K_(a_(2)) and K_(a_(3)) are the respective ionisation constants for the following reactions. H_(2)S hArr H^(+) + HS^(-) HS^(-) hArr H^(+)+S^(2-) H_(2)S hArr 2H^(+)+S^(2-) The correct relationship between K_(a_(1)) , K_(a_(2)) and K_(a_(3))is

K_(a_(1)), K_(a_(2)) and K_(a_(3)) are the respective ionisation const

1.	K_(a_(1)), K_(a_(2)) and K_(a_(3)) are the respective ionisation constants for the following reactions. H_(2)S hArr H^(+) + HS^(-) HS^(-) hArr H^(+)+S^(2-) H_(2)S hArr 2H^(+)+S^(2-) The correct relationship between K_(a_(1)) , K_(a_(2)) and K_(a_(3))is
Answer» `K_(a_(3))=K_(a_(1))xxK_(a_(2))` `K_(a_(3))=K_(a_(1)) + K_(a_(2))` `K_(a_(3))=K_(a_(1)) - K_(a_(2))` `K_(a_(3))=K_(a_(1)) // K_(a_(2))` Solution :`K_(a_(1))=([H^(+)][HS^(-)])/([H_(2)S]),K_(a_(2))=([H^(+)][S^(2-)])/([HS^(-)]), K_(a_(3))=([H^(+)]^(2)[S^(2-)])/([H_(2)S])` Obviously, `K_(a_(3))=K_(a_(1))xxK_(a_(2))`.