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Which of the following are redox reactions
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Recommended: Which of the following are redox reactions
Batteries are such common things. We require batteries in the day to day life and it is an inevitable part of our daily life. Innumerable devices run on batteries such as clocks, mobile phones, cars, flashlight, etc. Batteries have the potential to convert chemical energy into electrical energy. However, do you know redox reaction powers a battery? Electron transfer reactions take place inside a cell which is the basic principle by which a batter/cell is made. Redox reaction is a type of chemical reaction. A chemical reaction involves process change that happens when to or more molecules react with one another and result in the formation of a new product. In this article more about redox reactions with respect to electron transfer reactions. …show more content…
This process is called redox process. Now let us understand the definition of oxidation and reduction according to electron transfer. Oxidation in Terms of Electro Transfer Reaction Oxidation is the process in which group of atoms or a single atom of a chemical reaction loses one or more electrons. Thus, oxidation results in the loss of electrons and increase in the positive charge of a species or decrease in the negative charge of the species. For example Reducing agents or reductants are the species of a compound that undergoes electron loss during a chemical reaction. According to the example given above, Cl-, Fe2+, and Cu are reductants. Reduction in terms of Electron Transfer Reaction A reduction is the process in which an atom or a group of it participating in a chemical reaction gains electrons. Gaining of electrons decreases the positive charge and increases the negative charge of the participating species. For example Oxidizing agents or oxidants are the species undergoing gain of electrons during a chemical reaction. According to the above example of reactions, Ag+, Fe3+ ions, and Br2 molecules are the oxidants. Redox …show more content…
Therefore, it can be said that if a substance will lose an electron, there must be a substance which will gain electrons. This is because electrons cannot be the final product in any chemical reaction. Hence, it implies that in a specific process or a reaction oxidation will occur when there will be a simultaneous reduction and vice versa. Thus, it signifies that oxidation and reduction are complementary processes and neither of them can occur alone. This is the reason for naming this kind of chemical reaction as redox
Oxidation-reduction reactions can be used to stereochemically control and produce many different organic molecules. The oxidation step in this process increases the number of carbon oxygen bonds by losing a hydrogen and breaking that bond. Through the reduction step, carbon-oxygen bond is broken and the hydrogen is returned.
A chemical reaction is a process in which the rearrangement of the molecular or ionic structure of a substance is transformed physically or chemically. If the reaction occurs, the starting products will always be different from the products. They also involve the motion of electrons which leads to buildup and breakdown of chemical bonds. There are six types of chemical reactions including Synthesis, Decomposition, Single Replacement, Double Replacement, Combustion, and Acid Base. Each reaction has their own unique characteristics that make them special.
“Chemistry is the study of substances; their properties, structure, and the changes they undergo” (Lower). Chemistry is the study of all the stuff in the world and especially how they change. My experiment deals mostly with the change of substances. Some of the concepts involved in my experiment are Oxidation/Reduction (redox) reactions, electrolysis, pH, and electrical currents. A redox reaction is a reaction in which there is a transfer of electrons from one substance to another. There are two paired parts to a redox reaction: the oxidation and the reduction. The oxidation is the loss of electrons while the reduction is the gain of electrons. They always occur together because one substance has to receive the electrons that another substance is giving up. Electrolysis is a process where electricity goes through a liquid, which causes chemical reactions to occur. pH is the measure of how acidic or basic something is. More exactly, it is, at least indirectly, the number of hydrogen ions there are in a liter of solution. A hydrogen ion is a hydroge...
The activation energy is reduced so that there is a better chance of particles having enough energy to react. Reactants will need less. energy to react to. 2. What is the difference between a..
There are a few key concepts to chemical changes. A physical change, such as state change or dissolving, does not create a new substances, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants.
Oxygen is an essential component for cellular metabolic processes. As a result of normal cellular metabolism, oxidative products i.e. oxygen free radicals or reactive oxygen species are produced. In eukaryotic cells energy is generated in mitochondria as a result of aerobic respiration and this oxidative metabolism is responsible for formation of various compounds. Nearly all of these compounds are advantageous but a small proportion could be lethal if produced in higher concentration. During normal conditions small quantities of oxidative products are necessary for certain sub cellular events, including enzyme activation, formation of disulfide bond during the folding of new proteins, signal transduction and gene expression etc. (Yu etal., 2002; Droge, 2002). Oxidative stress can be defined as the excessive production of ROS which are not adequately removed from the body, because of reduced antioxidant defense system or the ROS increases beyond the capacity of antioxidants. The balance between oxidants and antioxidants is vital because oxidative stress can cause oxidative damages to N.A, lipids and proteins. The most important ROS are superoxide anion (O2−), singlet oxygen (O2), hydrogen peroxide (H2O2) and highly reactive hydroxyl radical (OH-). Whereas, antioxidant defense system is responsible to give protection against ROS. These antioxidants can scavenge and destroy ROS. The major antioxidant enzymes are catalase (CAT), superoxide dismutase (SOD) PON ….. and glutathione system (Sies, 1985; Valko et al., 2007; Halliwell and Gutteridge, 1990).
These reasons are why Lithium-Ion Batteries are some of the most viable options when designing new gadgets. But, the structure of these batteries are why these batteries are being used for new gadgets. A Lithium-Ion Batt...
Tarnished means to dull the luster of; discolor. Coins can get dirty from rain, dirt, and other environmental hazards. Humans can even contaminate coins with dirt and bacteria in their hands. Also, "The atoms of the coins can combine with oxygen molecules in the atmosphere in a chemical process called oxidation." (Deziel) Oxidation is to form or cause to form a layer of metal oxide, as in rusting. In this chemical process, the atoms of the coins combine with oxygen atoms in the air to create corrosion on the coins. The corrosion can make the coin look dirty, or can even change the color of the
– Introduction – In the body, the term for all chemical reactions that occur in the cells is called metabolism. The two types of chemical reactions, anabolic and catabolic, differ in the body. Anabolic reactions bodily cells build molecules and store energy in chemical bonds. Catabolic reactions are when these chemical bonds break and energy is released in the form of ATP or heat.
Reactions occur when the particles of reactants collide together continuously. If they collide with sufficient energy, then they will react. The minimum amount of kinetic energy required for particles at the time of collision is called the activation energy and this theory is known as the ?collision theory?.
... the reaction to shift to the right would be to remove products. A third way is to change the temperature. Since this is an endothermic reaction, +∆H, we can imagine that “heat” is a reactant. Thus, if we add heat, it will shift to the right. To be classified as a redox reaction, we need at least two elements to change oxidation states. The easiest way to look at a reaction and determine this is if you have an element by itself on one side of the reaction and it is in a compound on the other side. Most of the time, the oxidation number of each element in a compound is their common charge. The sum of oxidation numbers must equal the compounds overall charge. Elements in the natural state (by themselves) have an oxidation number of 0. The reducing agent is the species responsible for reducing the other chemical. Therefore, the reducing agent is oxidized itself.
This equation also shows fermentation process, which proves an anaerobic respiration, which means that oxygen is absent from the process. Anaerobic respiration takes place in organisms and releases a small amount of energy very quickly. In most organisms, it consists of a chain of chemical reactions called glycolysis, which break down glucose into pyrutic acid.
It involves collisions between the free electrons, the fixed. particles of the metal, other free electrons and impurities. These collisions convert some of the energy that the free electrons are. carrying heat, which means that electrical energy is lost. Apparatus: I will be using an Ammeter.
This form of chemical reaction is known as a single displacement reaction and is exothermic. The reaction is irreversible and is written as: