A 1.0-L buffer solution contains 0.100 mol acid, HA, and 0.100 mol base, NaA. The value of K, for the acid HA is 1.8x104. Ignoring the small volume change, what is the most likely pH of the solution if a 10.0 mL- sample of 1.00M HCI is added to the original buffer? O 1.20 < pH < 1.45 く O 5.50 < pH < 5.74 O 4.10 < pH < 4.22 O 3.51 < pH < 3.69

Chemistry: Principles and Reactions
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Chapter14: Equilibria In Acid-base Solutions
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Problem 14QAP: A buffer solution is prepared by adding 5.50 g of ammonium chloride and 0.0188 mol of ammonia to...
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A 1.0-L buffer solution contains 0.100 mol acid, HA, and 0.100 mol base,
NaA. The value of K, for the acid HA is 1.8x104. Ignoring the small
volume change, what is the most likely pH of the solution if a 10.0 mL-
sample of 1.00M HCI is added to the original buffer?
O 1.20 < pH < 1.45
O 5.50 < pH < 5.74
O 4.10 < pH < 4.22
O 3.51 < pH < 3.69
Transcribed Image Text:A 1.0-L buffer solution contains 0.100 mol acid, HA, and 0.100 mol base, NaA. The value of K, for the acid HA is 1.8x104. Ignoring the small volume change, what is the most likely pH of the solution if a 10.0 mL- sample of 1.00M HCI is added to the original buffer? O 1.20 < pH < 1.45 O 5.50 < pH < 5.74 O 4.10 < pH < 4.22 O 3.51 < pH < 3.69
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