For maximum buffer capacity we need weak acid or weak base along with its conjugate with nearly same amount.
Option A is not suitable since HNO3 is strong acid. Option B is not a buffer . Option D is also not buffer as citric acid conjugate base is monosodium citrate ( in general sodium citrate means trisodium citrate which is not conjugate base of citric acid
Option C is answer
HF is weak acid and NaF is its conjugate base.
Which of the following has the greatest buffer capacity, that is, which could absorb the largest...
11. Which has the greatest buffering capacity? Explain your answer. (3 points) A) 0.821 MHF and 0.909 M NaF C) 0.121 M HF and 0.667 M NaF B) 0.100 M HF and 0.217 M NaF D) 0.821 M HF and 0.217 M NaF E) They are all buffer solutions and would all have the same capacity 12. Calculate the pH of a solution prepared by dissolving 0.423 mol of formic acid (HCOOH) and 0.325 mol of sodium formate (HCOONa) in...
1) Which of the following aqueous solutions are good buffer systems? . a. 0.29 M hydroiodic acid + 0.20 M sodium iodide . b. 0.12 M barium hydroxide + 0.29 M barium chloride . c. 0.14 M nitrous acid + 0.12 M potassium nitrite . d. 0.34 M ammonium nitrate + 0.36 M ammonia . e. 0.31 M hydrofluoric acid + 0.29 M potassium fluoride . 2)A solution contains 0.486 M NH4I and 0.480 M ammonia. The pH of this...
29. A student has 200 mL of a buffer solution that consists of 0.700 M of citric acid and 0.500 M sodium citrate. What is the pH of this solution? The pKal of citric acid is 3.06. 30. Give the formula and name of a metal hydroxide base.
Question 6 (5 points) Of the following solutions, which has the greatest buffering capacity? O 0.121 M HF and 0.667 M NaF O 0.821 M HF and 0.909 M NaF 0.100 M HF and 0.217 M NaF They are all buffer solutions and would all have the same capacity.
What is the pH of the buffer solution in question 2 (Recall the values were: 1.0 L buffer of 0.35 M hydrofluoric acid (HF, Ka = 3.5x10-4) and 0.68 M sodium fluoride (NaF)) after 0.031 moles NaOH are added?
What is the pH of the buffer solution in question 2 (Recall the values were: 1.0 L buffer of 0.35 M hydrofluoric acid (HF, Ka = 3.5x10-4) and 0.68 M sodium fluoride (NaF)) after 0.052 moles of HCl are added? The answer is NOT 2.65
Which of the following aqueous solutions are good buffer systems? 0.31 M ammonia +0.38 M sodium hydroxide 0.21 M hydrobromic acid + 0.16 M sodium bromide 0.18 M barium hydroxide + 0.29 M barium bromide 0.34 M potassium bromide + 0.27 M barium bromide 0.21 M hydrocyanic acid + 0.20 M potassium cyanide Which of the following aqueous solutions are good buffer systems? 0.21 M acetic acid + 0.11 M hydrochloric acid 0.11 M sodium hydroxide + 0.24 M sodium...
Which of the following aqueous solutions are good buffer systems? a. 0.14 M barium hydroxide + 0.24 M barium bromide b. 0.27 M nitric acid +0.22 M potassium nitrate c. 0.27 M ammonium nitrate + 0.37 M ammonia d. 0.20 M acetic acid + 0.16 M sodium acetate e. 0.34 M hypochlorous acid + 0.21 M sodium hypochlorite Submit Answer 2 question attempts remaining Use the References to access important values if needed for this question. The pH of an...
Aqueous Equilibria Buffer Problem What will be the final pH if 0.0500 moles of H+ ions are added to one liter of a buffer made from 0.500 M hydrocyanic acid and 0.300 M sodium cyanide? Ka for hydrocyanic acid is 6.2 x 10-10. Solution is 8.87 Please show all steps
1.) Which of the following aqueous solutions are good buffer systems? . 0.39 M barium chloride + 0.26 M calcium chloride 0.29 M ammonia + 0.40 M sodium hydroxide 0.11 M calcium hydroxide + 0.20 M calcium bromide 0.24 M hydrobromic acid + 0.24 M sodium bromide 0.13 M acetic acid + 0.17 M sodium acetate 2.) Which of the following aqueous solutions are good buffer systems? . 0.11 M potassium hypochlorite + 0.20 M hypochlorous acid 0.38 M hydrocyanic...