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https// pter 9 postlectureStrength of Electrolytes eringchemistry.com/myct/itemV

ID: 584742 • Letter: H

Question

https// pter 9 postlectureStrength of Electrolytes eringchemistry.com/myct/itemView?assignmentProblemID-87934068 a previous 25 of 25 retur art B The table below shows values derived from the acid dissociation constants of several acds, which essentially indicates how much of 1.00 mol of each acid participa ionization when added to 1 00 1 of water See the transition above for an example of the ns formed. For example, f 1.00 × 10-2 the amount for A then 00 x 10-2 mol out of 1 00 mol forms ions, and the rest remains in solid form such as sold at the bottom of a beaker or as an aqueous molecular species or weak acids and weak bases) Acid Amount of Acid that Dissociates (from 1.00 mol) 6.82 x 10 mol 1.53 x 10 "mol 3.60 x 10mo 3.54 10 mo HAsO HIO H2S H,Se Use the data to predict the relative strengths of the acids as electrolytes Rank from weakest to strongest. To rank items as equivalent, overlap them. Hints

Explanation / Answer

1 mole of H3AsO4 dissociates 6.82*10^-2 moles remaining moles are not ionisable
i.e 1 mole - 0.0682moles   = 0.932 moles remains
1mole of HIO3 dissociate 1.53*10^-1 mole remaining mole are not dissociates
1mole - 0.153 moles = 0.847 moles remains
1 mole of H2S dissociates 3.6*10^-4 moles of reaminig moles are not dissociates.
   1 mole - 0.00036moles = 0.99964 moles remains
1 mole of H2Se dissociates 3.54*10^-2 moles remaining moles are not dissociates
1 mole - 0.0354 moles = 0.9646 moles remains

H2S is weak acid due to less moles of acid is dissociate.
Rake the acid from waek to strongest
H2S<H2Se<H3AsO4<HIO3