Chemical Reaction Examples-10F by Heather Murray

Making Oxygen in Submarines (Kevin)

2024-01-17 19:53:53 UTC

Oxygen in submarines is produced by putting sea water through a process of electrolysis. Submarines typically have a couple of big oxygen tanks as well, used to quickly raise oxygen concentration if the system fails. Actually, normally oxygen concentration is slightly lower in the submarine than it would be on the land. This allows for reducing the risk of spreading fires. There are many different sensors around the submarine, monitoring the concentration of oxygen and carbon dioxide, which has to be removed.

The submarines get in water and Producing oxygen by electrolyzing water.

Chemical reaction:

2H2O (electrolyzing)-> 2H2 + O2

Reaction Type: Decomposition Reaction

Photosynthesis

2024-01-17 20:01:32 UTC

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyl and generates oxygen as a byproduct. The standard formula for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2. This indicates that six carbon dioxide and six water molecules, which are the reactants, are transformed into a sugar molecule and six oxygen molecules, which are the products, by light energy that chlorophyll (shown by the arrow) absorbs. This reaction is a single displacement.

Photosynthesis Vienna

2024-01-17 20:02:03 UTC

The process of photosynthesis is commonly written as 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll. Photosynthesis is constantly happening when plants are exposed to sunlight.

Iron rust - Elle

2024-01-17 20:05:17 UTC

The chemical formula for rust is FE203 and is commonly known as iron oxide. Iron rusting requires both water and oxygen. Iron rusting involves a process called corrosion. It is the slow eating up of metals by gas and water vapours present in the atmosphere due to the formation of certain compounds like oxide, sulphides, carbonate, etc. When iron comes into contact with oxygen in the presence of moisture (water), a reddish brown coating is formed on the surface of iron called rust. The standard chemical reaction for iron rusting is 4Fe(s) + 3O2(g) + 2x H2O(aq) -> 2FE2O3 + H2O. This is a oxidation reaction.

Soft drinks fizzing(Jessie)

2024-01-17 20:07:06 UTC

For aerated beverages such as sodas, the active ingredient is carbon dioxide (CO2). This colorless, odorless gas occurs naturally in the atmosphere. Many people enjoy the feeling of bubbles bursting in their mouths when they drink a soda. These bubbles are caused by carbonation. Carbonation occurs when carbon dioxide (CO2) dissolves in water (H2O) or an aqueous solution.

Chemical reactions equation: H₂O + CO₂ ⇋ H₂CO₃

The symbol ⇋ in the chemical equation shows that the reaction is reversible.

Burning Fuels - Yatharth

2024-01-17 20:07:13 UTC

Combustion is a high-temperature exothermic redox (oxygen adding) chemical reaction between a fuel and an oxidant, that produces oxidized, often gaseous products, in a mixture termed as smoke. For example, the fuel you burn in your car's engine contains octane, C8H18. When octane is burned, the products are CO2 and H2O.

Rusting (Elise)

2024-01-17 22:06:16 UTC

Rusting is the process of iron oxidising. The equation for rusting is 4Fe + 3O2 --> 2Fe2O3. Iron molecules react with oxygen molecules to form the compound iron oxide. Oxidisation is when a chemical gains oxygen or loses hydrogen and the atoms lose electrons. Corrosion occurs when most of the outer atoms on a metal surface oxidise, which forms the rust. This easily happens to metals because they lose electrons often because of air or water.

Fermentation - zoë

2024-01-19 01:10:54 UTC

Through the metabolic process of fermentation, carbohydrates are changed into organic acids or alcohol by microorganisms like bacteria or yeast. This anaerobic method, which takes place in the absence of oxygen, is essential for the formation of a number of different products, such as lactic acid during the fermentation of dairy products and ethanol during the fermentation of alcoholic beverages. The general chemical equation for alcoholic fermentation is C6H12O6 → 2C2H5OH + 2CO2, which represents the transformation of glucose into carbon dioxide and ethanol.

Smelting Iron - Aman

2024-01-19 03:06:13 UTC

Smelting is a pyrometallurgical process that involves burning ores to high temperatures while a reducing agent, like coke or carbon, is present. This process removes metals from ores. The main goal of smelting is to extract the metal from silicates and oxides that are impurities in the ore. The chemical equation producing the molten iron is Fe2O3+3CO→2Fe+3CO.