What Mass of Ammonium Chloride Must Be Added to 250

question 99

Multiple Choice

What mass of ammonium chloride must be added to 250. mL of water to give a solution with pH = 4.85? [K_b(NH₃) = 1.8 * 10^-5]

• A) 4.7 g
• B) 75 g
• C) 2.3 * 10^-3 g
• D) 19 g
• E) 10. g

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