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Sandra T.
Questions (2)
How many grams of NH4Cl do I have to add to 500 mL of 0.100 M NH4OH to have a pH of 9.40?
Kb= 1.8 x 10^-5 [OH-]= 2.51 x^-5 M
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Your laboratory supervisor directs you to prepare 500.0 mL of a buffer with a pH of 9.40. You have available all the weak acids
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