A voltaic cell is constructed using Hg/Hg+2 for one half-cell and Cr/Cr+3 for the other half-cell. The half-cells are at standard conditions and contain equal-mass electrodes and the same volume of solutions.
Reference: Cr+3(aq) + 3 e- ---> Cr(s) E0 = -0.74 V; Hg+2(aq) + 2 e- ---> Hg(l) E0 = +0.80 V
(a) Write the balanced net ionic equation for the spontaneous reaction produced in the cell.
(b) Calculate the value of E0 for the spontaneous reaction.
(c) What is the value of the standard free-energy change, delta G0, for the spontaneous reaction? Use appropriate units with your answer.
(d) If the cell operates until [Cr+3] is 1.09 M in the Cr/Cr+3 half-cell, what is [Hg+2] in the Hg/Hg+2 half-cell?
(e) In another voltaic cell with the same half-cells, [Hg+2] is 1.00 M and [Cr+3] is 0.050 M. How should Ecell for this cell compare to the value in (b)? Justify your answer
Answers: 2
Chemistry, 22.06.2019 00:30
Microtubular fibers that assist in the movement of chromosomes during nuclear division in conjunction with proteins, makes up the small and large organelle pieces that assemble prior to translation three-base nucleotide sequence that can complementarily pair with the functional transcript, allowing a particular material to be brought to a ribosome particular time in the cell cycle when the cell’s systems determine if the cellular conditions are appropriate to continue through the cycle time in the cell’s cycle when proteins are made and organelles are duplicated enzyme that allows proper nucleotide bonding during transcription specific dna sequence which will initiate gene transcription division of the cell’s cytoplasm specific bond that forms between two amino acids when a carboxyl group binds to a amino group three-base sequence that does not code for a particular amino acid a paired organelle which facilitates the formation of movement microtubules time in the cell’s cycle when the microtubular structures exert an equal pressure on the cell’s genetic material
Answers: 2
Chemistry, 22.06.2019 13:00
If two objects at different te,peraure are in contact with each other what happens to their temperature
Answers: 1
Chemistry, 22.06.2019 14:50
Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.
Answers: 1
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
A voltaic cell is constructed using Hg/Hg+2 for one half-cell and Cr/Cr+3 for the other half-cell. T...
Mathematics, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Biology, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Chemistry, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00
Spanish, 23.03.2021 02:00
Mathematics, 23.03.2021 02:00