Use this data to rank the following solutions in order of increasing pH. In othe

Question

Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' 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.

i safari File Edit View History Bookmarks Window Help R G) 1- 60% E, Tue Nov 21 11:42 PM E www.awh.aleks.com Sign out BIO Lab module 4.xlsx Gunned Down: The Power of the ALEKS-Learn - Hannah Zigman Consider The Following Data O ACIDS, BASES AND AQUEOUS EQUILIBRIA Predicting the qualitative acid-base properties of salts Hannah Consider the following data on some weak acids and weak bases base acid name formula name ormula nitrous acidHNO2 4.5x104 methylamine CH2NH 2 4.4x 10 alo hydrofluoric acid | HF | 6.8 × 10-

Explanation / Answer

answer:

0.1 M C2H5-NH3-Cl = 4 (salt of weakbase,strong acid- acidic , pkb of c2h5nh2 = 3.36)

          pH = 7-1/2(pkb+logC) (pkb increases, pH decreases)

0.1 M KNO2 = 1   (salt of weakacid,strong base- basic = pH>7)

0.1 M CH3-NH3-Cl = 3 (salt of weakbase,strong acid- acidic , pkb of ch3nh2 = 3.2 )

0.1 M NaNo3 = 2 (salt of strongacid,strong base- neutral = pH = 7))

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