A ALEKS-Corinne werte- e A 50lution Is Prepared A × \\ G potassium hydroxide-o x

Question

A ALEKS-Corinne werte- e A 50lution Is Prepared A × G potassium hydroxide-o x New Tab ? Objective Knowledge Check Question 15 Corinne. Consider the following data on some weak acids and weak bases: acid base name formula nameformula hydrocyanic acid | HCN 4.9%10-10 hydrofluoric acid IF 6.8 x 104 pyridine! C,115N|1.7×10-9 dlo aniline4.3 x 10 Ar Use this data to rank the following solutions in order of Increasing pH. In other words, select a '' next to the solution that will have the lowest pH, a '2" next to the solution that will have the next lowest pH, and so on solution pH 0.1 M NaF choose one choose one 0.1 M KCN 0.1 M KC 0.1 MHNH3r choose one T choose one I Don't Know Submit :58 PM 4/2/2018 ALEKS-Cerinne Ve.. Screenshot (301).pm

Explanation / Answer

Acid shiuld have lower pH than base

The values of Ka and Kb are used to determine acid and basic strength respectively.If Ka and Kb values are high the acid and base strength respectvily will be higher.

If Ka or Kb values is lower then the salt made by the acid or base by reaction with strong base or strong acid will be more hydrolysed or more dissociated by water.

Therefore,

Increasing oreder of pH is

0.1MKCN(1)<0.1MNaF(2)<0.1MKCl(3)< 0.1MC6H5NH3Br(4)

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