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[" 149.An acid HA ionises as "HA rightle...

[" 149.An acid HA ionises as "HA rightleftarrows H^(+)+A^(-)" .The pH of 1.0M solution is 5.Its dissociation "],[" constant would be "],[[" (1) "5," (2) "1times10^(-5)," (3) "5times10^(-8)," (4) "1times10^(-10)]]

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