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_2 S; K_a1 = 8.9 times 10^-8; K_a2 = 1.0 times 10^-19 1 M HIO; 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 arc mixed in aqueous solution, which will form a buffer solution? NaOH with Na_2 CO_3) HCL with NaOH HCL with NaCl NH_3 with NH_4Cl Which titration has an equivalence point with a basic pH? titrating HCIO_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) Identify and justify the Bronsted-Lowry acid in the reaction: NH_3 + HBr rightarrow NH_4Br HBr because it is a proton donor HBr because it is a proton acceptor NH_3 because it is a proton donor NH_3 because it is a proton acceptor Which is the most prevalent species in a 025 M aqueous solution of phosphoric acid, H_3PO4? H_3 O^+ HPO_4^2- H_2PO_4^- H_3PO_4

Explanation / Answer

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What acid is likely to result in the greater of percent ionization I aqueous solution

Ka can be referred as the equilibrium constant for the acid ionization.

Ka increases, the proportion of acid molecule that are ionized increases

So

Answer = option A     -( 1 M HC2H2BrO2; ka= 1.3 x10^-3 )

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The ph of 0.0100 M solution of a weak acid HA is 3.76 . what is the percent of ionization of HA FOR THIS SOLUTION ?

HA <--> H+ +A-

pH= log 1/[H+]
1/[H+]=10^pH and
[H+]=10^-3.76=1.737*10^-4 M

% ionisation = (actual ionized)/(total possible ionized) x 100%

PLUGGING VALUES in above equations

% ionisation = (1.737 E-4 /   0.0100) x 100% = 0.017 % ---------ANSWER

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When equal molar amounts of these sets of compounds are mixed in aqueous solution, which will form a buffer solution

Answer = option D

NH3 and NH4Cl

NH4Cl is the salt of a weak base (NH3), so the solution is buffered.

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Which titration has an equivalence point with a basic pH?

A) titrating HClO4 (aq) with Ca(OH)2 (aq)
B) titrating HNO2 (aq) with KOH (aq)
C) titrating HNO3 (aq) with KOH (aq)
D) titrating NH3 (aq) with HCl (aq)

Answer = option B

titrating HNO2 (aq) with KOH (aq) ---------------ANSWER

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Identify and justify the bronsted Lowery ACID IN REACTION NH4+Hbr

Acid is HBr

according Bronsted-Lowry acid,

It is a substance which donates a proton to another substance

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