Hydrofluoric acid has a Ka value of 7.2*10^-4. What is the pH of a 0.04M solution of hydrofluoric acid? HF (aa) + H20 - H30* (am) + F- (aa) 4.5 O 2.3 O 11.7 O 1.4 O

A solution contains 0.08 M acetic acid, HC₂H3O₂ (K₁ = 1.7 × 10¯5 at 25°C), and 0.15 M sodium a What is the pH of the solution at 25°C? 4.28 3.86 O 5.04 O 7.05 6.02

Which of the following solutions would have the highest pH? Assume that they are all 0.10M in acid at 25°C. *HClO2 ka= 1.1×10^-2 *HCHO2 ka=1.8×10^-4 *HOCl ka= 2.9×10^-8 *HC6H5O ka= 1.3×10^-10 *HNO2 ka= 4.6×10^-4

What is the pH of a 1.25 M solution of HCIO? HCIO (aq) + H20 (1) = H30* (aq) + CIO" (aq) Ка -2.88 х 108 O 12.25 O-3.72 O 2.25 O 3.72 O 10.28

At room temperature (25°C), 45 mL of a 0.002 M acid solution is fully neutralized by30 mL of a NaOH (aq) solution (pH = 11.95). Determine (through calculations)whether the acid is phosphoric acid (H3 PO4 ), acetic acid (CH 3 COOH), or carbonicacid (H 2 CO3 )

Sulfurous acid (H, SO,) is a diprotic acid with Kal = 1.39 × 10-2 and Ka2 = 6.73 × 10-8. Determine the pH of a 0.232 M sulfurous acid (H, SO,) solution. 1.25 pH = Incorrect

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Calcium fluoride, CaF2, is a compound added to toothpaste to help prevent cavities. Calculate the pH of a 0.7430 M CaF2 solution at 25 °C. The K₂ for HF is 6.6x10-4.

Ka for phenol (a weak acid), C6H5OH, is 1.00E-10. Ka for acetylsalicylic acid (aspirin), HC9H7O4, is 3.00E-4. Ka for hydrofluoric acid, HF, is 7.20E-4. What is the formula for the strongest conjugate base? A₂ A² ?