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2. The pKa of NH4Cl is 9.2. Its conjugate base is NH3. One has two stock solutions. One is 0.1 M NH4Cl and the other

2. The pKa of NH4Cl is 9.2. Its conjugate base is NH3. One has two stock solutions. One is 0.1 M NH4Cl and the other is 0.1 M NH3. How many mL of each solution must one mix to make 500 mL of a solution which has pH = 9.5?

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