Homework Answers
E0 = {(R*T)/(n*T)}*lnKc ...........(1)
Also, E = E0 - {(R*T)/(n*T)}*lnQ...........(2)
Thus, from (1) , if E0 > 0
lnKc > 0
or, Kc > 1...........(3)
Also, if E < 0
Then E0 - {(R*T)/(n*T)}*lnQ < 0
or, {(R*T)/(n*T)}*lnQ > E0 > 0
or, lnQ > 0
or, Q > 1 & Q > Kc
Hence the correct option is a) K > 1 ; Q > K
Add Answer to:
An electrochemical cell has a positive standard cell potential but a negative cell potential. Which statement...
63. In typical cell, which of the following has the highest electrochemical potential for movement? A....
63. In typical cell, which of the following has the highest electrochemical potential for movement? A. the electrochemical potential for Na to move into the cell B. the electrochemical potential for Na to move out of the cell C. the electrochemical potential for K to move into the cell D. the electrochemical potential for K to move into the cell the electrochemical potential for CT to move into the cell 64. In a typical cell, which of the following has...
The electrochemical cell described by the balanced chemical reaction has a standard cell potential of -0.2...
The electrochemical cell described by the balanced chemical reaction has a standard cell potential of -0.2 V. Calculate the equilibrium constant (Kc) for the reaction at 298 K. Round your answer to 3 significant figures. H2SO3(aq) + H2O(l) → H2(g) + SO42-(aq) + 2H+(aq) The electrochemical cell described by the cell notation has a standard cell potential of -0.10 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures. Pt(s) l Cr3+(aq),...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on the matrix side. The genomes of mitochondria don't range in size across species. The inner membrane is quite permeable because it contains mitochondrial porin, or VDAC (voltage-dependent anion channel). Mitochondria are semi-autonomous organelles, because mitochondria depend on the cell, and cells that contain mitochondria in turn depend on these organelles for oxidative phosphorylation. In bacteria, ATP-synthesizing complexes are located in the outer plasmatic membrane.
The standard cell potential for electrochemical cell is +1.102 V. Determine the cell potential at 25 ∘C if the concentr...
The standard cell potential for electrochemical cell is +1.102 V. Determine the cell potential at 25 ∘C if the concentration of zinc sulfate is 0.050 mol L-1 and the concentration of copper sulfate is 0.200 mol L-1. answer choices a) 1.120 b) 1.138 c) 1.102 d) 1.087
What would be the standard cell potential for a spontaneous electrochemical cell constructed with the two...
What would be the standard cell potential for a spontaneous electrochemical cell constructed with the two metals below? Cu2+(aq) + 2e– → Cu(s) E° = 0.34 V Sn4+(aq) + 2e– → Sn2+(aq) E° = 0.13 V
What would be the standard cell potential for a spontaneous electrochemical cell constructed with the two...
What would be the standard cell potential for a spontaneous electrochemical cell constructed with the two metals below? Cu2+(aq) + 2e– → Cu(s) E° = 0.34 V Sn4+(aq) + 2e– → Sn2+(aq) E° = 0.13 V
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper...
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 9.2×10-5 M? 1 pts Tries 0/8 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.160 V. What is [Cu2+] (in mol/L)? (Assume Cu2+ is reduced.) 1 pts...
Consider the following cell notation for an electrochemical cell. Which statement is true for the cell...
Consider the following cell notation for an electrochemical cell. Which statement is true for the cell as it discharges? Zn | Zn2+(1 .0 M) || Sn2+(1.0 M) | Sn Question options: a. Electrons will flow from the tin electrode to the zinc electrode. b. The mass of the tin electrode will decrease. c. The concentration of Zn2+ will increase. d. Oxidation occurs at the tin electrode.
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper...
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. a) What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 7.5×10-8 M? b) The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.109 V. What is [Cu2+] (in mol/L)? (Assume Cu2+ is reduced.) c) A calibration curve...
For a galvanic cell where the standard free energy change is negative and the cell potential...
For a galvanic cell where the standard free energy change is negative and the cell potential is positive, the reaction in the cell must be: Select the correct answer below: O always spontaneous O never spontaneous O spontaneous at certain temperatures O impossible to predict
63. In typical cell, which of the following has the highest electrochemical potential for movement? A. the electrochemical potential for Na to move into the cell B. the electrochemical potential for Na to move out of the cell C. the electrochemical potential for K to move into the cell D. the electrochemical potential for K to move into the cell the electrochemical potential for CT to move into the cell 64. In a typical cell, which of the following has...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on the matrix side. The genomes of mitochondria don't range in size across species. The inner membrane is quite permeable because it contains mitochondrial porin, or VDAC (voltage-dependent anion channel). Mitochondria are semi-autonomous organelles, because mitochondria depend on the cell, and cells that contain mitochondria in turn depend on these organelles for oxidative phosphorylation. In bacteria, ATP-synthesizing complexes are located in the outer plasmatic membrane.
For a galvanic cell where the standard free energy change is negative and the cell potential is positive, the reaction in the cell must be: Select the correct answer below: O always spontaneous O never spontaneous O spontaneous at certain temperatures O impossible to predict
Most questions answered within 3 hours.
-
A 10.000 g sample of water contains 11.19% H by mass. what
should be the %H...
asked 3 minutes ago -
Consider an investment game among 2 players. Each player can
either invest,
i, or not invest,-i....
asked 52 seconds ago -
The time taken to complete a particular task is normally
distributed with a standard deviation of...
asked 10 minutes ago -
we have heteroskedasticity in a regression when:
When the variance of error terms changes when an...
asked 20 minutes ago -
Explain some different types of fungi. State the different
divisions undergo by fungi.
asked 32 minutes ago -
The shortest time that 120 C can flow through a 20 A circuit
breaker without tripping...
asked 33 minutes ago -
A software design pattern is a general, reusable solution to a
commonly occurring problem, acting as...
asked 36 minutes ago -
The mean waiting time at the drive-through of a fast-food
restaurant from the time an order...
asked 52 minutes ago -
The pitch (p) of a helix is defined as p = dn, in which n is...
asked 54 minutes ago -
Do you agree that the declining stock of social capital is the
blame for the failure...
asked 58 minutes ago -
A researcher is interested in whether coffee consumption helps
with performance on reading comprehension tasks. The...
asked 1 hour ago -
it has been estimated since the beginning of the human race that
about 133 metric ton...
asked 1 hour ago