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Question

The pH of an aqueous solution of 0.1 Solution of the salt of a weak baseopen parentheses straight K to the power of straight b equals 1.0 cross times 10 to the power of negative 5 end exponent close parentheses and a strong acid is:

  1. 4.5    
  2. 5.0    
  3. 5.5    
  4. 6.0    

The correct answer is: 5.5

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