For a Corning 015 glass membrane electrode, the selectivity coefficient K is KH+/Na+ ≈ 1x10−11. What...
For a Corning 015 glass membrane electrode, the selectivity coefficient K is KH+/Na+ ≈ 1x10−11. What is the expected error when measuring the pH of a solution in which the activity of H+ is 2 x 10−13 M and activity of Na+ is 0.05 M? Thank you!
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For a Corning 015 glass membrane electrode, the selectivity
coefficient K is KH+/Na+ ≈ 1x10−11. What...
A glass membrane electrode is constructed that has a selectivity for Na vs Li, K, and...
A glass membrane electrode is constructed that has a selectivity for Na vs Li, K, and Ag with the following selectivity coefficents: K = 1/2800; KNax = 1/2750; and KwaAg = 1/3015. Answer the following questions: 1. What is the potential for the Na ISE when immersed in the following solutions: a) A 0.0100 M Nacl solution b) A 0.1100 M NaOH Solution c) A 0.5701 M NaNO Solution 2. Compute the potential change for each of the solutions in...
(a) When the difference in pH across the membrane of a glass electrode at 25 °C...
(a) When the difference in pH across the membrane of a glass electrode at 25 °C is 4.63 pH units, how much voltage is generated by the pH gradient? (b) What would be the voltage for the same pH difference at 37 °C? (c) The pH electrode has a selectivity coefficient k for Na+ of 10^-8 . What is the measured the pH value when the solution pH is at 9.0 with a Na+ concentration of 0.1 M?
7. (10 points) a) The selectivity coefficient for a Bromide ion-selective electrode is on 0.15. What...
7. (10 points) a) The selectivity coefficient for a Bromide ion-selective electrode is on 0.15. What will the change in the electrode potential be for a 1.4 x 10" M Br" at pH 5.5 if the pH is raised to pH 11.0? b) A PH probe is calibrated against pH 4 and pH 7 buffers. For pH 4 buffer, E = 200 mV and for pH 7 buffer, E = 23 mV. If the potential for an unknown solution is...
When the difference in pH across the membrane of a glass electrode at 25 degree C...
When the difference in pH across the membrane of a glass electrode at 25 degree C is 4.40 pH units, how much voltage is generated by the pH gradient? (F = 96485 C/mol; R = 8.3145 J/mol K) mV (three significant figures) (b) What would the voltage be for the same pH difference at 37 degree C? (F = 96485 C/mol; R = 8.3145 J/mol K) mv (three significant figures) When calibrating a glass electrode, 0.025 m potassium dihydrogen phosphate/0.025...
I would like to see the work done for the problems so I can have a...
I would like to see the work done for the problems so I can
have a better understanding. The awnsers are provided, mostly, at
the end of the question.
Thank You!
1. (3 pts) Calculate the pH of a buffer prepared by mixing 4.0 g OT IN uffer prepared by mixing 4.0 g of NH CI with 29 mL of OM N3 and diluting to 1.00 L (a) neglecting activity and (b) including activity. (Hint: see Eqn 9-18 in your...
5) Which of the following salts forms aqueous solutions with pli>T! Na:CO, e. Na SO, NaBr...
5) Which of the following salts forms aqueous solutions with pli>T! Na:CO, e. Na SO, NaBr d. NHL.CI 6) Which of the following is not a buffer system solution containing roughly equal concentrations of fluoride ion and hydrofluoric acid. c. phosphate ion and monophosphate ion. chloride ion and hydrochloric acid. d s ulfite ion and bisulfite ion. 7) What is indicated by the shape of the titration curve? b. Volume of titrant a. A diprotic acid was titrated with a...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of w...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid b. Oxalic acid c. CaCO3 d. KHP A solution that may contain NaOH, Na 2CO3, and NaHCO3, alone or in compatible combination was titrated with 0.1200 M HCl. The volume of the acid required to reach the phenolphthalein endpoint was 25.67 mL while 38.13 mL to reach the methyl red endpoint. What are the components of the mixture? a. Na2CO3 only b. NaOH only...
Based on the document below, 1. Describe the hypothesis Chaudhuri et al ids attempting to evaluate;...
Based on the document below,
1. Describe the hypothesis Chaudhuri et al ids attempting to
evaluate; in other words, what is the goal of this paper? Why is he
writing it?
2. Does the data presented in the paper support the hypothesis
stated in the introduction? Explain.
3.According to Chaudhuri, what is the potential role of thew
alkaline phosphatase in the cleanup of industrial waste.
CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...
need help with the rest of the table EXPERIMENT 10 DETERMINATION OF THE ELECTROCHEMICAL SERIES PURPOSE...
need help with the rest of the table
EXPERIMENT 10 DETERMINATION OF THE ELECTROCHEMICAL SERIES PURPOSE To determine the standard cell potential values of several electrochemical coll INTRODUCTION The basis for an electrochemical cell is an oxidation reduction Corredor be divided into two half reactions reaction. This reaction can Oxidation half reaction Gloss of electrons) takes place at the anode, which is the positive electrode that the anions migrate to Chence the name anode) Reduction half reaction (gain of electrons)...
A glass membrane electrode is constructed that has a selectivity for Na vs Li, K, and Ag with the following selectivity coefficents: K = 1/2800; KNax = 1/2750; and KwaAg = 1/3015. Answer the following questions: 1. What is the potential for the Na ISE when immersed in the following solutions: a) A 0.0100 M Nacl solution b) A 0.1100 M NaOH Solution c) A 0.5701 M NaNO Solution 2. Compute the potential change for each of the solutions in...
7. (10 points) a) The selectivity coefficient for a Bromide ion-selective electrode is on 0.15. What will the change in the electrode potential be for a 1.4 x 10" M Br" at pH 5.5 if the pH is raised to pH 11.0? b) A PH probe is calibrated against pH 4 and pH 7 buffers. For pH 4 buffer, E = 200 mV and for pH 7 buffer, E = 23 mV. If the potential for an unknown solution is...
When the difference in pH across the membrane of a glass electrode at 25 degree C is 4.40 pH units, how much voltage is generated by the pH gradient? (F = 96485 C/mol; R = 8.3145 J/mol K) mV (three significant figures) (b) What would the voltage be for the same pH difference at 37 degree C? (F = 96485 C/mol; R = 8.3145 J/mol K) mv (three significant figures) When calibrating a glass electrode, 0.025 m potassium dihydrogen phosphate/0.025...
I would like to see the work done for the problems so I can
have a better understanding. The awnsers are provided, mostly, at
the end of the question.
Thank You!
1. (3 pts) Calculate the pH of a buffer prepared by mixing 4.0 g OT IN uffer prepared by mixing 4.0 g of NH CI with 29 mL of OM N3 and diluting to 1.00 L (a) neglecting activity and (b) including activity. (Hint: see Eqn 9-18 in your...
5) Which of the following salts forms aqueous solutions with pli>T! Na:CO, e. Na SO, NaBr d. NHL.CI 6) Which of the following is not a buffer system solution containing roughly equal concentrations of fluoride ion and hydrofluoric acid. c. phosphate ion and monophosphate ion. chloride ion and hydrochloric acid. d s ulfite ion and bisulfite ion. 7) What is indicated by the shape of the titration curve? b. Volume of titrant a. A diprotic acid was titrated with a...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...
Based on the document below,
1. Describe the hypothesis Chaudhuri et al ids attempting to
evaluate; in other words, what is the goal of this paper? Why is he
writing it?
2. Does the data presented in the paper support the hypothesis
stated in the introduction? Explain.
3.According to Chaudhuri, what is the potential role of thew
alkaline phosphatase in the cleanup of industrial waste.
CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...
need help with the rest of the table
EXPERIMENT 10 DETERMINATION OF THE ELECTROCHEMICAL SERIES PURPOSE To determine the standard cell potential values of several electrochemical coll INTRODUCTION The basis for an electrochemical cell is an oxidation reduction Corredor be divided into two half reactions reaction. This reaction can Oxidation half reaction Gloss of electrons) takes place at the anode, which is the positive electrode that the anions migrate to Chence the name anode) Reduction half reaction (gain of electrons)...
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