question 4 &5 : 20-X 4. Codeine (C16H21NO3) is a derivative of morphine. It was once commonly used in cough syrups but is now available
question 4 &5 : 20-X
4. Codeine (C16H21NO3) is a derivative of morphine. It was once commonly used in cough syrups
but is now available only by prescription because of its addictive properties. If the pH of a 1.7 x
10 M solution of codeine is 9.59, calculate K.
A weak base, B, has a K, of 4.46 x 10-10. A solution with an unknown initial concentration is
tested, and found to have a pH of 8.39. Determine the initial concentration of B.
5.
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