I want a mathematical relation that relates the measured voltage with Ph value of unknown solution
I want a mathematical relation that relates the measured voltage with Ph value of unknown solution
Homework Answers
we can get an expression relating voltage and pH, from the Nernst equation. the complete expression and detailed explanation are given below.
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I want a mathematical relation that relates the measured voltage
with Ph value of unknown solution
relationship between measured voltage and ph value of an unknown solution
relationship between measured voltage and ph value of an unknown solution
An uncalibrated pH electrode produces a voltage of 0.184 V for a solution of pH 5.89...
An uncalibrated pH electrode produces a voltage of 0.184 V for a solution of pH 5.89 at 25 degrees Celcius. If the same electrode is used under the same conditions to measure a solution of unknown pH and 0.376 V is measured, what is the pH of the second solution?
A 0.350 M solution of an unknown base has a pH = 10.3. What is the value of the ionization constant, Kb, for the unknown...
A 0.350 M solution of an unknown base has a pH = 10.3. What is the value of the ionization constant, Kb, for the unknown base?
1) Determine the pH of a 0.0785 M unknown weak base solution. Kb of the unknown...
1) Determine the pH of a 0.0785 M unknown weak base solution. Kb of the unknown weak base is 4.7 x 10−6. 2) An unknown weak acid solution with a concentration of 0.0850 M has a pH of 4.35. What is the Ka for this weak acid? 3) What is the pH of a 0.0380 M solution of HNO2? (Use your workbook to find Ka) 4) An unknown weak base solution with a concentration of 0.187 M has a pH...
III. Standard Curves When we want to determine the concentration of an unknown solution, we typically measure a certain...
III. Standard Curves When we want to determine the concentration of an unknown solution, we typically measure a certain property of standard solutions with our standard (known) solutions and create what's called a standard curve (or calibration curve). A standard curve relates two variables of certain known solutions. That way, when there is an unknown variable for a certain solution, it can be determined through the standard curve. When plotting standard curves, we always plot the independent variable on the...
A glass electrode is calibrated using two standards and the voltage of the electrode in each...
A glass electrode is calibrated using two standards and the voltage of the electrode in each standard was measured. The voltage of an unknown solution was also measured. All measurements were conducted at 20° C. What is the theoretical slope of the electrode in mV/ pH unit at 20°C and give your answer rounded to two decimal places. Sample Nane pH Value (unitless) Voltage (mv) Standard 1 1.672 + 300.0 Standard 2 6.940 + 17.7 Unknown + 140.0
4. Suppose that when the cell potential for the unknown solution in # 3 was measured,...
4. Suppose that when the cell potential for the unknown solution in # 3 was measured, the voltage reading was unstable and the values ranged from-0.1950 to -0.2020 V. Based on these data, estimate S/N for that electrode measurement system. Use absolute values in your calculation.
A glass electrode is calibrated using two standards and the voltage of the electrode in each...
A glass electrode is calibrated using two standards and the voltage of the electrode in each standard was measured. The voltage of an unknown solution was also measured. All measurements were conducted at 20o C. Using the data calculate the value of β for this electrode and give your answer rounded to two decimal places. Sample Name pH Value (unitless) Voltage (mV) Standard 1 1.672 + 300.0 Standard 2 6.940 + 17.7 Unknown + 140.
A capacitor of known value "C" is charged to voltage "V,". The charged capacitor is then attached to an unknown capacit...
A capacitor of known value "C" is charged to voltage "V,". The charged capacitor is then attached to an unknown capacitor "C". The voltage across the "parallel" connected capacitors is measured to be V. 2. Show the unknown capacitance is given by ( VV l's" m - Vm
Determine the Ka value for an acid where a 0.03 M solution has a measured pH...
Determine the Ka value for an acid where a 0.03 M solution has a measured pH of 2.85. Enter your answer as a decimal with one significant figure. (e.g. 0.0003
III. Standard Curves When we want to determine the concentration of an unknown solution, we typically measure a certain property of standard solutions with our standard (known) solutions and create what's called a standard curve (or calibration curve). A standard curve relates two variables of certain known solutions. That way, when there is an unknown variable for a certain solution, it can be determined through the standard curve. When plotting standard curves, we always plot the independent variable on the...
A glass electrode is calibrated using two standards and the voltage of the electrode in each standard was measured. The voltage of an unknown solution was also measured. All measurements were conducted at 20° C. What is the theoretical slope of the electrode in mV/ pH unit at 20°C and give your answer rounded to two decimal places. Sample Nane pH Value (unitless) Voltage (mv) Standard 1 1.672 + 300.0 Standard 2 6.940 + 17.7 Unknown + 140.0
4. Suppose that when the cell potential for the unknown solution in # 3 was measured, the voltage reading was unstable and the values ranged from-0.1950 to -0.2020 V. Based on these data, estimate S/N for that electrode measurement system. Use absolute values in your calculation.
A capacitor of known value "C" is charged to voltage "V,". The charged capacitor is then attached to an unknown capacitor "C". The voltage across the "parallel" connected capacitors is measured to be V. 2. Show the unknown capacitance is given by ( VV l's" m - Vm
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