What mass of HI should be present in 0.250 L of solution to obtain a solution with pH value of 2.85. (A) 1.8 g (B) 0.035 g (C) 0.045 g (D) 0.055 g

100.0 mL 0.15 M aqueous HF (K₁ = 6.8 x 10-4) is mixed with 125.0 mL 0.23 M NaF. What is the pH of the resulting solution? (A) 2.17 (B) 3.17 (C) 3.35 (D) 3.45 a b C

(i) (ii) billa s Ph O 8 OEt ? ?

Please don't provide handwritten solution .....

Be detailed

Calculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NAOH to 30.0 mL of 0.100 M HNO3. 16 (a) 1.35 (b) 1.70 (c) 1.95 (d) 2.52 (e) 2.80

9. What is the pH of a solution whose hydronium ion concentration is 2.5 X 10-8 M? (a) 7.6 (b) 8.0 (c) 2.5 (d) 6.4 (e) 6.0 10. An aqueous solution has a pOH of 9.35, this solution is: (a) Neutral (b) Basic (c) Acidic (d) Impossible - this pOH cannot be reached in an aqueous solution (e) More information is needed. 11. Which is the strongest acid in the provided table below? Acid Acetamide 2-Pyridinamine Alloxanic Acid (a) Acetamide (b) 2-Pyridinamine (c) Alloxanic Acid (d) 4-chlorophenol (e) Quinoxaline pka 0.63 6.82 6.64 4-chlorophenol 9.18 Quinoxaline 0.56 avods rollor

Calculate the pH change that results when 15 mL of 2.0 M HCI is added to 580. mL of each of the following solutions (a) pure water 4.0-5.70 (b) 0.10 M CH3COO 4.04.28 (c) 0.10 M CH3COOH 4.0 (d) a solution that is 0.10 M in each CH3COO and CH3COOH. 4.0

. What is the pH of each of the following solutions? (Note that it may be necessary to use the quadratic formula to solve one or more of these problems.) (a) 0.35 M hydrochloric acid (b) 0.35 M acetic acid (c) 0.035 M acetic acid (d) Explain the differences in the pH values between the solutions in parts a-c.

Addition of the indicator methyl orange to an unknownsolution leads to a yellow color. The addition of bromthymolblue to the same solution also leads to a yellow color.(a) Is the solution acidic, neutral, or basic? (b) What is therange (in whole numbers) of possible pH values for the solution?(c) Is there another indicator you could use to narrowthe range of possible pH values for the solution?