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What is the difference between cell potential and standard cell potential?
the standard cell potential is the cell potential at standard conditions (25C , 1 atm , and 1M ) but the cell potential is the cell potential of the cell under a real condition and we use nernst equation . i hope this is useful
An action potential is caused by an influx of these ions into the cell?
An action potential is caused by an influx of sodium ions into the cell through voltage-gated sodium channels. This influx of sodium ions results in depolarization of the cell membrane, leading to the generation of an action potential.
What is the voltage of a galvanic cell made with silver and nickel?
1.05 V
How do sodium ions move during resting potential?
During resting potential, sodium ions are actively pumped out of the cell by the sodium-potassium pump to maintain the concentration gradient. This helps to establish a more positive charge outside the cell, contributing to the negative resting membrane potential inside the cell. Sodium channels are closed during resting potential, preventing sodium ions from moving back into the cell.
What is the value of the cell potential for a cell in which the electrodes are copper and sodium?
3.05
What must be the sign of the standard cell potential (cell) for a redox reaction to be spontaneous?
For a redox reaction to be spontaneous, the standard cell potential (cell) must be positive.
What is the standard cell potential for a cell made from gold and copper?
The standard cell potential for a cell made from gold and copper is the difference in standard reduction potentials between the two metals. The standard reduction potential for gold is +1.50 V and for copper is +0.34 V. Therefore, the standard cell potential would be 1.50 V - 0.34 V = 1.16 V.
Is a half-cell's standard reduction potential positive?
Yes, a half-cell's standard reduction potential is positive if the reduction reaction is spontaneous under standard conditions.
How do scientists measure the standard reduction potential of a half cell?
Scientists typically use a standard hydrogen electrode (SHE) as a reference electrode to measure the standard reduction potential of a half-cell. The half-cell under study is connected to the SHE through a salt bridge, and the cell potential is measured using a voltmeter. By comparing the potential of the half-cell with that of the SHE at standard conditions (1 M concentration and 25 degrees Celsius), the standard reduction potential of the half-cell can be determined.
What happens to the net concentration of sodium ions during the resting membrane potential?
During the resting membrane potential, the net concentration of sodium ions remains constant. The Na+/K+ pump works to actively transport sodium out of the cell and potassium into the cell, maintaining the resting membrane potential.
What is the voltage of a galvanic cellmade with silver and nickel?
The voltage of a galvanic cell made with silver and nickel will depend on the specific conditions and concentrations of the electrolytes used. However, the standard electrode potentials for the silver and nickel electrodes are +0.80 V and -0.23 V, respectively. So, under standard conditions, the cell potential would be 1.03 V.
Which electrolyte flows into the cell to initiate depolarization?
potassium The answer of potassium is dead wrong. Sodium is the electrolyte that flows into the cell to initiate depolarization. Potassium flows into the cell during repolarization.
