chemical engineering test / quiz prep and need the explanation and answer to help me learn.
An oxidizing agent is a substance that oxidizes other and get itself reduced
Requirements:
What is an oxidizing agent?
An oxidizing agent is a substance that oxidizes others and gets itself reduced.
What is a reducing agent?
A reducing agent is a substance that reduces others and gets itself oxidized.
What is the oxidation potential of an oxidizing agent?
The oxidation potential of an oxidizing agent is less as it gets reduced.
What is the reduction potential of a reducing agent?
The reduction potential of a reducing agent is less as it gets oxidized.
What factors affect the EMF of a cell?
The factors that affect the EMF of a cell are the nature of the chemical reaction, concentration of reactants and products, pressure of gases, and temperature.
How is the EMF of a cell calculated under SATP conditions?
Under SATP conditions, the EMF of all ions is calculated based on one molar concentration, 298 Kelvin temperature, and one atmosphere pressure.
How is the EMF of a cell calculated using the Nernst equation?
The EMF of a cell can be calculated using the Nernst equation. If the cells are in their standard states, the EMF of the cell can be calculated using the equation: e0 of cell = e0 of cathode – e0 of anode.
What does the positive or negative value of the standard EMF of the cell indicate?
The positive or negative value of the standard EMF of the cell determines whether the reaction is spontaneous or nonspontaneous.
What is the purpose of using a salt bridge in a galvanic cell?
A salt bridge is used to bring electro neutrality to two solutions in a galvanic cell by nullifying their positive and negative charges.
What is the role of the anode in a galvanic cell?
The anode is negatively charged and it is where the oxidation half-reaction occurs in a galvanic cell.
How can you determine the signs of the electrodes in a galvanic cell?
By knowing the sign of one electrode, you can determine the signs of the other three electrodes. In a galvanic cell, the anode is always negatively charged.
How are the signs of the electrodes in an electrolytic cell different from a galvanic cell?
In an electrolytic cell, the signs of the electrodes are opposite to that of a galvanic cell.
