A Sample of Ammonia (Approximately 0

question 84

Multiple Choice

A sample of ammonia (approximately 0.10 M, K _b = 1.8×10 ^{- 5}) is titrated with 0.0993 M HCl. What indicator should be used?

• A) methyl red (p K _In = 5.00)
• B) bromthymol blue (p K _In = 7.30)
• C) phenolphthalein (p K _In = 8.7)
• D) thymol blue (p K _In = 9.20)
• E) alizarin yellow R (p K _In = 10.2)

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