Question

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1. Which process best accounts for the numerical value of theequivalence-point pH after the titration of formic acid, HCOOH withNaOH?

		A. HCOO- (aq) + H2O (l) <--------> HCOOH (aq) +OH- (aq)
		B. HCOOH(aq) + H2O(l) <-------> -COOH (aq) + H3O+(aq)
		C. HCOOH (aq) + H3O+ (aq) <-------->HCOOH2+ (aq) + H2O(l)
		D. HCOOH(aq) + H2O(l) <------->HCOOH2+ (aq) + OH- (aq)

2.Which volume of 0.234 M HClmust be added to 45.0 mL 0.432 M CH₃NH₂ (Kb = 3.70 x 10^-4) to reach a pH of 11.21?

		A. 5.00 mL
		B. 11.6 mL
		C. 14.0 mL
		D. 83.0 mL