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A certain weak acid, HA, has a Ka value of 7.3

A certain weak acid, HA, has a Ka value of 7.3

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Expert Solution

Part A

HA -------------------------------------> H+             +                         A-

0.1                                                       0                                         0    initially

0.1 (1- y)                                             0.1 y                                     0.1 y

Ka = 0.1 y2           because for weak acid y <<<<<1

Ka = 7.3 x 10-7 so y = 2.7 x 10-3

Percentage of ionization is 0.27

Case B

y = 8.54 x 10 -3

Percentage of ionization is 0.85

queen_honey_blossom answered 1 year ago
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