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[20mL" of "0.1M" weak acid "HA(K(a)=10^(...

[20mL" of "0.1M" weak acid "HA(K_(a)=10^(-5))" is mixed "],[" with solution of "10mL" of "0.3MHCl" and "10mL],[" of "0.1MNaOH" .Find the value of "],[[A^(-)]/([HA]+[A^(-)])" in the resulting solution :- "],[[" (1) "2times10^(-4)," (2) "2times10^(-5)],[" (3) "2times10^(-3)," (4) "0.05]]

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