Which acid is likely to result in the greatest percent ionization in aqueous sol

Question

Which acid is likely to result in the greatest percent ionization in aqueous solution? 1 M HC_2H_2BrO_2; K_a = 1.3 times 10^-3 1 M HCHO_2; K_a = 1.8 times 10^-4 1 M H_2S;k_a1 = 8.9 times 10^-8; K_a2 = 1.0 times 10^-19 1 MHIO;k_a = 3.2 times 10^-11 The pH of a 0.0100 M solution of a weak acid, HA, is 3.76. What is the percent ionization of HA for this solution? 5.8% 1.7% 0.58% 0.017% When equal molar amounts of these sets of compounds are mixed in aqueous solution, which will form a buffer solution? NaOH with Na_2CO_3 HCl with NaOH HCI with NaCl NH_3 with NH_4Cl Which titration has an equivalence point with a basic pH? titrating HClO_4(aq) with Ca(OH)_2(aq) titrating HNO_2(aq) with KOH(aq) titrating HNO_3(aq) with KOH(aq) titrating NH_3(aq) with HCl(aq)

Explanation / Answer

Lets look at question number 9

Degree of ionization and Ka of acid are related values

Higher the value of Ka , Higher is the ionization

So in the given option we can see in option C and D the Ka values are very less , So the ionization of acids in these cases will be very less.

In case of A and B , both are mono acids and value of Ka for A is greater than B .So A option has the highest ionization . Hence option A is correct.

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