0
What else can I help you with?
How can one determine the cell potential in a chemical reaction?
The cell potential in a chemical reaction can be determined by calculating the difference in standard electrode potentials of the two half-reactions involved in the cell. The cell potential is the difference between the reduction potentials of the two half-reactions. The formula for calculating cell potential is Ecell Ered(cathode) - Ered(anode).
Explain the theory behind the potentiometric titration of acid base?
In potentiometric titration, the change in the concentration of H+ ions are monitored based on the emf measurement with respect to Saturated calomel electrode ( a reference electrode having a standard reduction potential of 0.2422 V). H+ ions concentration in terms of pH change is measured using primarily by quinhydrone electrode. Based on hydrogen electrode also it can be measured. An electrochemical cell consists of H+ ions (acid to be titrated) in contact with hydrogen gas (1 atm) or quinhydrone/ quinone should be formed and the emf (potential difference) of the cell is measured with reference to saturated calomel electrode (SCE). Then based on Nernst equation value of standard electrode potential of hydrogen ion is, EH = Eo + 0.0591 log [H+] or EH = - 0.0591 pH since Eo = 0 V and -log [H+] = pH So EMF of the cell is Ecell = ESCE - EH Ecell = 0.2422 - EH The Ecell value is plotted ( Y axis) against volume of base added (X axis). The volume corresponds to drastic Ecell change gives equivalence point of the titration. At equivalence point all the free H+ ions are replaced as H2O and this is reflected and can be inferred in the Ecell values.
Can the Nernst equation be used at temperatures other than room temperature?
Yes. Why? The Nernst equation to calculate the Ecell for non standard conditions is as follows:Ecell = E°cell - (RT/nF ) lnQso T can be any temperature in KelvinThe other version of the Nernst equation is for standard conditions:Ecell = E°cell - (0.0592/n) logQThis applies only at room temperature. When at 25°C, (RT/F )becomes a constant of 0.0592. So if you are determining the Ecell at room temp use the second equation, for any other condition use the first equation.Cheers!
What are the differences between polycarbohydrate and polysaccharide?
The term "polycarbohydrate" is not commonly used in scientific literature and may not have a specific meaning. "Polysaccharide" refers to a polymer made up of multiple sugar molecules, such as starch or cellulose. Polysaccharides play important roles in energy storage, structural support, and cell recognition in organisms.
Why does oxygen diffuse into cell?
Oxygen diffuses into cells due to differences in oxygen concentration between the environment and the cell. Cells consume oxygen during cellular respiration to produce energy, creating a concentration gradient that drives oxygen diffusion into the cell. Oxygen then binds to hemoglobin in red blood cells for transport to tissues throughout the body.
Which unit of measure is used to indicate Ecell?
The unit of measure used to indicate Ecell, which is the cell potential or electromotive force of a cell, is volts (V).
How can one determine the cell potential in a chemical reaction?
The cell potential in a chemical reaction can be determined by calculating the difference in standard electrode potentials of the two half-reactions involved in the cell. The cell potential is the difference between the reduction potentials of the two half-reactions. The formula for calculating cell potential is Ecell Ered(cathode) - Ered(anode).
What is differences between prokryotes and eukryotes?
has a cell membrane
What are the 2 differences between an animal cell and a plant cell?
cell wall, central vacuole, and chloroplasts
What are the differences between elodea cell and a paramecium cell?
the differences between the paramecuim cell and the elodea cell is that paramecuim- hunt for food, live by itself, single cell creature. elodea- make their onw food, cannot live alone, multicullar cells. (lots of cells)
What are the differences and the similarities between the plant and animal cell?
Animal cells have no cell Walls and plant cells have a cell wall
What are the main differences between plants and animals cells?
the plant cell is round and the animal cell is squered
How do you find equilibrium constant using standard reduction potentials?
To find the equilibrium constant using standard reduction potentials, you can use the Nernst equation: Ecell = E°cell - (RT/nF)ln(Q), where Ecell is the cell potential at equilibrium, E°cell is the standard cell potential, R is the gas constant, T is the temperature in Kelvin, n is the number of electrons transferred, F is Faraday's constant, and Q is the reaction quotient. By rearranging this equation and using the standard reduction potentials for the half-reactions involved, you can calculate the equilibrium constant.
What does cell diversity mean?
Cell diversity refers to the wide variety of cells and the differences between various cells.
What are the main differences between plant cells and animal cells?
the plant cell is round and the animal cell is squered
What is the major similarity and the major differences between cellular respiration and photosynthesis?
That it have cell
How are the structures that have similar functions alike and different among plants and animals?
the differences between an animal cell and a plant cell is that an animal cell has a cell membrane and a plant cell has a cell wall.
