Assuming No Volume Change on Mixing,what Mass of Ammonium Chloride

question 121

Multiple Choice

Assuming no volume change on mixing,what mass of ammonium chloride should be added to 250.0 mL of 0.25 M aqueous ammonia to produce a solution of pH 10.70? (K_b for ammonia is 1.8 × 10^-5)

• A)3.7 mg
• B)120 mg
• C)40 mg
• D)30 mg
• E)80 mg

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