A solution is prepared at 25 °C that is initially 0.30 M in benzoic acid (HC,H,Co,), a weak acid with K,= 6.3 x 10 (NaC,H,CO,). Calculate the pH of the solution. Round your answer to 2 decimal places. and 0.48 M in sodium benzoate

8. Our bodies are able to preserve a near constant pH due to the presence of hydrogen carbonate anion (HCO,). K values for the diprotic acid carbonic acid (H,CO;) are Kaj = 4.5 x 10?, K2 = 4.7 x 10-". a) Hydrogen carbonate anion is an amphoteric species. Define amphoteric. b) In the space below, write out chemical equations to describe the behavior of this species as both a Bronsted acid and a Bronsted base, and use the equilibrium constants given above to decipher whether a solution of HCO;¯ will be acidic, basic, or neutral. Support your answer with pertinent calculations.

The ionization states of Phosphoric Acid are shown below: At a pH of 7.4 identify the relevant acid and conjugate base species. Using the Henderson-Hasselbach equation calculate the ratio of acid to conjugate base at this pH.

A chemist titrates 60.0 mL of a 0.0694M butanolc acid (HC,H.CO, solution with 0.8174M NaOH solution at 25 °C. Calculate the pH at equivalence. The pK, of butanolc acid Is 4.82. D. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NaOH solution added. pH Ar Explanation Check 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Accessibilit hp -> esc &

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A solution is prepared at 25 °C that is initially 0.47 Min dimethylamine ((CH,) NH), a weak base with K, =5.4 x 10 , and 0.25 M in dimethylammonium 9. chloride ((CH, NH,CI). Calculate the pH of the solution. Round your answer to 2 decimal places. pH = |

A solution is prepared at 25 °C that is initially 0.051M in benzoic acid (HC,H,CO,), a weak acid with K,=6.3 × 10 °, and 0.079M in potassium benzoate (KC,H,CO,). Calculate the pH of the solution. Round your answer to 2 decimal places. pH = [|

A solution is prepared that is initially 0.41 M in trimethylamine ((CH N, a weak base, and 0.40M in trimethylammonium bromide ((CH,)¸NHB"). Complete the reaction table below, so that you could use it to calculate the pH of this solution. Use x to stand for the unknown change in [OH]. You can leave out the M symbol for molarity. [CH.),N] [CH),NH] [on] initial change final olo X O O

A solution is prepared at 25 °C that is initially 0.16 M in benzoic acid (HC,H,CO,), a weak acid with K,=6.3 × 10 °, and 0.058 M in sodium benzoate -5 %3D (NaC H,CO,). Calculate the pH of the solution. Round your answer to 2 decimal places.

A solution is made by mixing 185 mL of 0.100 M formic acid (Ka = 1.7 x 10-4 ) with 190. mL of 0.100 M sodium formate. What is the pH of the solution? Express your answer in decimal notation rounded to three significant figures.