Recent questions without a selected answer

0 votes

1 answer 32 views

Calculate the overpotential of an electrochemical cell where Zinc metal is used as an anode and Copper metal as a cathode. The concentration of Zinc ions in the half-cell is 1 M and Copper ions in the half-cell is 0.1 M. The temperature of the system is 25°C. (Given: Standard Reduction Potentials - Zn²⁺ + 2e⁻ → Zn(s) = -0.76 V and Cu²⁺ + 2e⁻ → Cu(s) = +0.34 V)

asked 5 days ago in ElectroChemistry by NestorSeccom (410 points)

0 votes

1 answer 32 views

Calculate the overpotential of a lead electrode in contact with a solution containing [Pb2+] = 0.001 M when the temperature is 298 K. Given that the standard potential of the Pb2+ / Pb electrode is -0.13 V and the exchange current density is 0.015 A/m2.

asked 5 days ago in ElectroChemistry by JoeyGkg21308 (350 points)

0 votes

1 answer 30 views

Calculate the overpotential for the reduction reaction of Ag+ to Ag on a silver electrode at 25°C with a current density of 0.5 A/cm2. The standard reduction potential of Ag+ to Ag is 0.799 V vs. the standard hydrogen electrode. The activation energy for this reaction is 65.0 kJ/mol, the transfer coefficient is 0.4 and the reaction order is 1.5.

asked 5 days ago in ElectroChemistry by AllisonMcRob (670 points)

0 votes

1 answer 26 views

Calculate the overpotential (in millivolts) for the reduction of Cu2+ to Cu on a copper electrode at 25°C, given that the standard reduction potential of Cu2+ to Cu is +0.34 V and the actual voltage is 0.32 V.

asked 5 days ago in ElectroChemistry by DorethaBeam6 (710 points)

0 votes

1 answer 34 views

Calculate the number of electrons transferred when a solution containing 0.25 M Ni(NO3)2 is electrolyzed using a current of 0.50 A for 2.0 hours. The reaction taking place is Ni2+ (aq) + 2e- --> Ni (s).

asked 5 days ago in ElectroChemistry by GarfieldLoui (530 points)

0 votes

1 answer 36 views

Calculate the number of electrons transferred when 1 mole of magnesium is oxidized to form magnesium ions in an electrochemical cell. The balanced half-reaction is Mg → Mg2+ + 2e-.

asked 5 days ago in ElectroChemistry by KristyDobos (430 points)

0 votes

1 answer 40 views

Calculate the number of electrons transferred in the following reaction: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s) Hint: In order to balance the equation, you'll need to add electrons to one side of the reaction.

asked 5 days ago in ElectroChemistry by IrisHammond9 (470 points)

0 votes

1 answer 41 views

Calculate the number of electrons transferred in the electrochemical reaction when a solution of silver nitrate is added to a copper electrode and a salt bridge is used to complete the circuit.

asked 5 days ago in ElectroChemistry by BradfordKins (330 points)

0 votes

1 answer 45 views

Calculate the number of electrons transferred during the following redox reaction: Cu(s) + 2Ag+ --> Cu2+ + 2Ag(s)

asked 5 days ago in ElectroChemistry by MohammedBris (530 points)

0 votes

1 answer 43 views

Calculate the number of electrons transferred during the following electrochemical reaction: Mg(s) + 2H+(aq) → Mg2+(aq) + H2(g)

asked 5 days ago in ElectroChemistry by MichaleChen (470 points)

0 votes

1 answer 24 views

Calculate the new equilibrium concentration of a complex ion formed between Cu2+ and NH3(aq) at 25°C, if the initial concentration of Cu2+ is 0.10 M and NH3(aq) is 0.05 M, and the temperature is increased to 35°C. The equilibrium constant (Kc) for this reaction is 1.6×107.

asked 5 days ago in Chemical equilibrium by LizaW812340 (290 points)

0 votes

1 answer 31 views

Calculate the monolayer capacity and specific surface area of a sample of silica gel using BET theory. The sample was found to have a weight of 2.56 g and a total surface area of 260 m²/g. The gas used for adsorption was nitrogen at a temperature of 77 K and a pressure range of 0.01-0.3 P/P₀. The plot of (P/P₀)/(V₀/V) versus P/P₀ generated a straight line with a slope of 4.2×10⁻³.

asked 5 days ago in Surface Chemistry by KeiraMcLerie (450 points)

0 votes

1 answer 31 views

What is the role of chaperones in protein folding and how do they prevent protein aggregation?

asked 5 days ago in BioChemistry by FredComstock (390 points)

0 votes

1 answer 24 views

What is the role of chaperones in protein folding, and how do they assist in the correct folding of proteins?

asked 5 days ago in BioChemistry by LouannePethe (490 points)

0 votes

1 answer 31 views

How do chaperones assist in protein folding and prevent misfolding? What is the mechanism behind their action in facilitating proper folding?

asked 5 days ago in BioChemistry by KeeshaMcLeay (510 points)

0 votes

1 answer 44 views

What is the role of chaperone proteins in the folding process of newly synthesized proteins and how do they assist in preventing misfolding or aggregation?

asked 5 days ago in BioChemistry by SusanHedges4 (310 points)

0 votes

1 answer 33 views

How do chaperone proteins aid in the folding process of newly synthesized polypeptides during protein synthesis?

asked 5 days ago in BioChemistry by Nydia80H2789 (450 points)

0 votes

1 answer 51 views

How does the presence of chaperone proteins affect the folding of newly synthesized proteins?

asked 5 days ago in BioChemistry by GiselleRoot (530 points)

0 votes

1 answer 26 views

How do chaperone proteins facilitate proper folding of newly synthesized polypeptide chains during protein synthesis? Include the role of ATP in the folding process in your answer.

asked 5 days ago in BioChemistry by AlejandraTra (550 points)

0 votes

1 answer 28 views

How do chaperone proteins facilitate the correct folding of newly synthesized proteins in the cell?

asked 5 days ago in BioChemistry by AlexandraCru (510 points)

Recent questions without a selected answer

Categories