(a) In a dropping mercury electrode (dme), a new measurement is made on each drop. The...

(a) In a dropping mercury electrode (dme), a new measurement is made on each drop. The drop size can be controlled by the diameter of the capillary which feeds the dme. Discuss advantages and disadvantages of using a small drop vs. a large drop.
(b) Discuss the differences between the hydrodynamic boundary layer and the diffusion boundary layer near the surface of a rotating disk electrode.
(c) Discuss advantages and disadvantages of linear vs. cyclic voltammetry.

Expert Solution

Amanda K answered 6 months ago

When measuring with a pH electrode, several things limit the accuracy of the measurement. In each...

When measuring with a pH electrode, several things limit the accuracy of the measurement. In each of the following situations, describe what would cause the observed effect: A. Acid error occurs when the pH is too low. Example, you have a 0.5 M solution of HCl, but your probe provides a measured pH of 0.50 B. Sodium error occurs when the pH is too high. Example, you have a 0.5 M solution of NaOH, but measure a pH of 13.00...

Describe the criteria of considering a half reaction to be a reference electrode in electrochemical measurement...

Describe the criteria of considering a half reaction to be a reference electrode in electrochemical measurement in a 3-electrode configuration.

A galvanic cell consists of a mercury (Hg) electrode immersed in 0.26 L of 0.105 M...

A galvanic cell consists of a mercury (Hg) electrode immersed in 0.26 L of 0.105 M Hg2+ solution and a silver (Ag) electrode immersed in 0.74 L of 1.44 M Ag+ solution. The galvanic cell is allowed to discharge at 25 °C until equilibrium is reached. What is the concentration of Hg2+ at equilibrium? Data: E° (V) Hg2+ + 2 e− → Hg(l) 0.854 Ag+ + e− → Ag(s) 0.800 Round your answer to two significant figures.

Pure oxygen was first made by heating mercury(II) oxide: HgO→Hg+O2Unbalance. 1) How many grams of mercury...

Pure oxygen was first made by heating mercury(II) oxide: HgO→Hg+O2Unbalance. 1) How many grams of mercury are formed from 46.5 g of HgO? 2) How many grams of oxygen are formed from 46.5 g of HgO? 3) How many grams of HgO would you need to obtain 33.3 g of O2?

12. A simple pendulum is made of a hollow spherical bob full of mercury and suspended...

12. A simple pendulum is made of a hollow spherical bob full of mercury and suspended by a thin string. If the mercury begins to leak from the small hole at its bottom, then its time period: (a) Increases. (b) Decreases. (c)First increases and then decreases till it is the same again (d) First decreases and then increase still it is the same again

What is produced at each electrode in the electrolysis of AgF(aq)? Match the products with the...

What is produced at each electrode in the electrolysis of AgF(aq)? Match the products with the correct bin products=H2(gas), O2(g), F2(g), Ag(s) Bins-anode bin, cathode bin, not produced bin. Given Reduction half-reaction Potential (V) F2(g)+2e−→2F−(aq) +2.87 O2(g)+4H+(aq)+4e−→2H2O(l) +1.23 Br2(l)+2e−→2Br−(aq) +1.07 Ag++e−→Ag(s) +0.80 2H2O(l)+2e−→H2(g)+2OH−(aq)−0.83 Na+(aq)+e−→Na(s) −2.71

What is the reduction potential at 25∘C for the hydrogen electrode in each of the following...

What is the reduction potential at 25∘C for the hydrogen electrode in each of the following solutions? The half-reaction is as follows: 2H+(aq)+2e−→H2(g,1atm) Part A 1.0 M HCl. Part B A solution having pH = 4.16. Part C Pure water. Part D 1.1 M NaOH.

1. You made two determinations of the wavelength of the bright green mercury line, one based...

1. You made two determinations of the wavelength of the bright green mercury line, one based on the first order interference and the other based on the second order interference. Which one do you think is more precise? Explain why. 2. Why is the wavelength of the spectral lines that seem same color have slightly different wavelength when emitted by different element? 3. List some diffraction phenomena in your daily life experience. 4. What does the spectrum from sunlight look...

Write the cell reaction and electrode half-reactions and calculate the standard potential of each of the...

Write the cell reaction and electrode half-reactions and calculate the standard potential of each of the following cells: a) Zn/ZnSO4(aq)//AgNO3(aq)/Ag b) Pt/K3[Fe(CN)6](aq), K4[Fe(CN)6](aq)//CrCl3 (aq)/Cr Please show all steps and clear writing. Thanks

Write a balanced half-reaction for the product that forms at each electrode in the aqueous electrolysis...

Write a balanced half-reaction for the product that forms at each electrode in the aqueous electrolysis of the following salts: FeI2; K3PO4.

Question