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Answer all questions You are titrating 20.0 mLs of 0.10 M Cd2+ with 0.20 M EDTA at pH 9.0, using 1.0 M acetate to pr...
You are titrating 130.0 mL of 0.050 M Ca2 with 0.050 M EDTA at pH 9.00....
You are titrating 130.0 mL of 0.050 M Ca2 with 0.050 M EDTA at pH 9.00. Log K for the Ca2 EDTA complex is 10.65, and the fraction of free EDTA in the Y4-form, *. is 0.041 at pH 9.00. (a) What is Kt, the conditional formation constant, for Ca2 at pH 9.00? Number K: (pH 9.00) = 110 (b) What is the equivalence volume, Ve, in milliliters? Number mL (c) Calculate the concentration of Ca+ at V- 1/2 Ve...
A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of thi...
A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution The K, for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. Answer: A buffered solution resists a change in pH. Calculate the pH when 21.2 mL of 0.031 M HCl is added to 100.0 mL of the above buffer. Answer:
can you please answer 1,2, and 3 and show the steps 1. Calculate the pH of...
can you please answer 1,2, and 3 and show the steps
1. Calculate the pH of a buffer solution made by adding 20.0 mL of 0.200 M acetic acid solution with 10.0 mL of a 0.200 solution of sodium acetate. K, for acetic acid is 1.8 x 109. Assume the total volume is 30.0 mL. 2. Calculate the pH of a buffer solution made by mixing 10.0 mL of 0.20 M ammonia with 15.0 mL of 0,15 M ammonium chloride...
Answer all assigned questions and problems, and show all work. Determine the pH of (a) a...
Answer all assigned questions and problems, and show all work. Determine the pH of (a) a 0.40 MCH3CO2H solution, (b) a solution that is 0.40 MCH3CO2H and 0.20 MNaCH3CO2. (8 points) (Reference: Chang 16.5) Which of the following solutions can act as a buffer? (a) KCl/HCl, (b) KHSO4/H2SO4, (c) KNO2/HNO2.(5 points) (Reference: Chang 16.9) Calculate the pH of the buffer system made up of 0.15 MNH3/0.35 MNH4Cl. (5 points) (Reference: Chang 16.11) The pH of a bicarbonate-carbonic acid buffer is...
to answer number 28. you refer back to 24. but im stuck on it ans confused....
to answer number 28. you refer back to 24. but im stuck on it
ans confused.
2NaC1 HOH c. + MgC12 + H2S04> Na2S04+2HCI d. Ca(OH)2+ Pb(NO3)2> Ca(NO3)2 + Pb(OH)2 3 parts) What is the H+ concentration and pH of a 0.20 M solution of hypochlorous acid, Ka 3.5 x 10*? (SHOW ALL STEPS FOR CR CONC. AND SOLVE FOR 22.pH ) 20. ICE CHART, sOLVE FOR 21 23. What is the hydroxide ion concentration and pH of a 0.10...
Please answer these 5 questions. 1) a buffer is made by dissolving (CH3NH3)Cl and CH3NH2 in...
Please answer these 5 questions. 1) a buffer is made by dissolving (CH3NH3)Cl and CH3NH2 in water. Write equations to show how this buffer neutralizes added H3O+ and OH-. 2) If you add 15.0 mL of 1.25 M NaOH to 250. mL of a 0.200 M propanoic acid (CH3CH2CO2H) solution, what is the pH of the resulting solution? 3)If added to 500. mL of 0.20 M NaOH, which of these would form a biffer? Briefly, justify your decision for each...
help me out, please! answer all the multiple choice. (15) A phosphate buffer solution is prepared by mixing 100. m...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
could you please use the ksp values from this list A solution contains 6.98x10-²M nickel(II) acetate...
could you please use the ksp values from this list
A solution contains 6.98x10-²M nickel(II) acetate and 6.65x100 M iron(II) nitrate. Solid ammonium carbonate is added slowly to this mixture. What is the concentration of iron(II) ion when nickel ion begins to precipitate? [Fe2+] = LU Substance Aluminum compounds Substance 1.6 X 10-16 1.9 X 10-33 1.3 x 10-20 7.8 x 10-21 6.7 X 10-31 2.4 x 10-23 1.6 X 10-9 Chromium compounds CrAsO4 CH(OH), СТРО. Cobalt compounds Co (AsO.)...
I added everything thing. this is the lab question you need to solve. First assigned buffer...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
i want answer to all questions please Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the so...
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
You are titrating 130.0 mL of 0.050 M Ca2 with 0.050 M EDTA at pH 9.00. Log K for the Ca2 EDTA complex is 10.65, and the fraction of free EDTA in the Y4-form, *. is 0.041 at pH 9.00. (a) What is Kt, the conditional formation constant, for Ca2 at pH 9.00? Number K: (pH 9.00) = 110 (b) What is the equivalence volume, Ve, in milliliters? Number mL (c) Calculate the concentration of Ca+ at V- 1/2 Ve...
A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution The K, for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. Answer: A buffered solution resists a change in pH. Calculate the pH when 21.2 mL of 0.031 M HCl is added to 100.0 mL of the above buffer. Answer:
can you please answer 1,2, and 3 and show the steps
1. Calculate the pH of a buffer solution made by adding 20.0 mL of 0.200 M acetic acid solution with 10.0 mL of a 0.200 solution of sodium acetate. K, for acetic acid is 1.8 x 109. Assume the total volume is 30.0 mL. 2. Calculate the pH of a buffer solution made by mixing 10.0 mL of 0.20 M ammonia with 15.0 mL of 0,15 M ammonium chloride...
to answer number 28. you refer back to 24. but im stuck on it
ans confused.
2NaC1 HOH c. + MgC12 + H2S04> Na2S04+2HCI d. Ca(OH)2+ Pb(NO3)2> Ca(NO3)2 + Pb(OH)2 3 parts) What is the H+ concentration and pH of a 0.20 M solution of hypochlorous acid, Ka 3.5 x 10*? (SHOW ALL STEPS FOR CR CONC. AND SOLVE FOR 22.pH ) 20. ICE CHART, sOLVE FOR 21 23. What is the hydroxide ion concentration and pH of a 0.10...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
could you please use the ksp values from this list
A solution contains 6.98x10-²M nickel(II) acetate and 6.65x100 M iron(II) nitrate. Solid ammonium carbonate is added slowly to this mixture. What is the concentration of iron(II) ion when nickel ion begins to precipitate? [Fe2+] = LU Substance Aluminum compounds Substance 1.6 X 10-16 1.9 X 10-33 1.3 x 10-20 7.8 x 10-21 6.7 X 10-31 2.4 x 10-23 1.6 X 10-9 Chromium compounds CrAsO4 CH(OH), СТРО. Cobalt compounds Co (AsO.)...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
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