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The MnO2 would like to take electrons from the Zn much the same way that a bully would like to take someones lunch money. The problem for MnO2 is that it is not touching the Zn. The MnO2 is touching the graphite electrode and is trying to pull off the graphite electrons. Graphite is tougher than Zn and will not give up electrons but there is a tug. The graphite makes the positive electrode of the cell.
On the Zn side, the Zn is the electrode and the electrons are not held very well by Zn. So the Zn electrode has pressure of electrons wanting to leave and the graphite electrode has suction that wants more electrons. The pressure difference can be measured as 1.5 volts. Volts are used to measure electrical pressure.
When a light bulb or something is connected then electrons from the Zn electrode have a path to go to the graphite electrode. The graphite is willing to give electrons to MnO2 because it can get them back from the Zn through the circuit.
Also when the Zn electrode loses 2 electrons a Zn atom turns into an ion and dissolves in the electrolyte. Because of its positive charge it is attracted to the correspondingly formed negative charge at the graphite when MnO2 took an electron.
What else can I help you with?
Which of the following best describes a galvanic cell?
A Spontaneous Redox Reaction
What drives a galvanic cell?
A Spontaneous Redox Reaction
Photosynthesis is a redox reaction. This means that H2O is BLANK during the light reactions and CO2 is BLANK during the Calvin cycle. a. consumed...reduced b. reduced...oxidized c. oxidized...reduced?
Photosynthesis is a redox reaction where water (H2O) is oxidized during the light reactions, leading to the release of oxygen as a byproduct. In the Calvin cycle, carbon dioxide (CO2) is reduced to form carbohydrates with the help of ATP and NADPH produced during the light reactions. Therefore, the correct options are c. oxidized...reduced.
Do redox reactions occur in living things?
Yes, redox reactions occur in living things as they play a critical role in various biological processes, such as cellular respiration and photosynthesis. These reactions involve the transfer of electrons between molecules, which is essential for energy production and growth in organisms.
What is the role of redox reaction in photosynthesis?
In photosynthesis, redox reactions play a crucial role in transferring electrons from water to carbon dioxide, converting them into oxygen and glucose. This electron transfer is essential for the production of energy in the form of ATP and NADPH, which are used in the synthesis of carbohydrates in plants.
Which best describes a galvanic cell a battery containing a non spontaneous reaction a battery containing an acid and a base a battery containing a spontaneous redox reaction a battery that requires?
spontaneous redox reaction
How can one determine if a chemical reaction is a redox reaction?
One can determine if a chemical reaction is a redox reaction by identifying if there is a transfer of electrons between the reactants. In a redox reaction, one substance loses electrons (oxidation) while another gains electrons (reduction). This transfer of electrons indicates a redox reaction is taking place.
A single reaction where oxidation and reduction take place is called?
A redox reaction. This type of reaction involves the transfer of electrons from one reactant to another, resulting in oxidation and reduction of the reacting species.
Is browning banana a redox reaction?
A browning banana is a redox reaction.
The reactions taking place inside a lead accumulator are said to be redox reactions describe the chemical reaction and justify the statement?
The chemical reaction occurring in a lead-acid battery, also known as a lead accumulator, involves a redox reaction between lead dioxide (PbO2), lead (Pb), and sulfuric acid (H2SO4). The reaction can be represented as: PbO2 + Pb + 2H2SO4 → 2PbSO4 + 2H2O. This reaction involves the transfer of electrons between the lead and lead dioxide, leading to a change in oxidation states, which is characteristic of redox reactions. The lead-acid battery relies on these redox reactions to convert chemical energy into electrical energy.
How can you tell for sure that a redox reaction has happened?
if oxidation states change, it is a redox reaction
How can one identify a redox reaction?
A redox reaction can be identified by the transfer of electrons between reactants. Look for changes in oxidation states of elements involved in the reaction to determine if it is a redox reaction.
How can a galvanic cell become an electrolytic?
the redox reaction is reserved
Is a redox reaction always a single-displacement reaction but a single-displacement reaction isn't always a redox reaction?
This is true -APEX
A single displacement reaction is always a redox reaction but a redox reaction isnt always a single displacement reaction?
false true
A single-displacement reaction is always a redox reaction but a redox reaction isn't always a single-displacement reaction.?
This is true -APEX
Is an alkaline battery voltaic or electrolytic?
An alkaline battery is voltaic, meaning it converts chemical energy into electrical energy through a spontaneous redox reaction. This reaction occurs within the battery to produce a flow of electrons and generate electrical power.
