Chemical reactions in daily life

Chemical reactions in daily life, class X chemistry

1. Chemical Reactions In Daily Life Presented by- Garv Jain Harshpreet Kaur Jeewan Khullar

2. Introduction Every moment around us hundreds of reactions are taking place. Some are clearly visible to us an some are hidden. Some are vigorous while others are slow. Some of the most common examples are seen in various procedures of cooking like frying, fermentation and souring of milk. Within us a chemical reaction, respiration is continuously going on. Burning of various fuels is also an example of chemical reaction.

3. combustion of fuel CH 4 (g) + 2O 2 (g) → CO 2 (g) + 2H 2 O(g Combustion  or burning is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species. The release of heat can produce light in the form of either glowing or a flame.

4. respiration Cellular respiration is the set of the metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate  (ATP), and then release waste products. The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy in the process as weak so-called "high-energy" bonds are replaced by stronger bonds in the products.

5. Rusting of iron Rust is an iron oxide, usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture.  2Fe(s) + 2H 2 O(l) + O 2 (g)  2Fe 2+ (aq) + 4OH - (aq)

6. Ethanol fermentation The chemical equation below shows the alcoholic fermentation of glucose, whose chemical formula is C 6 H 12 O 6 .  One glucose molecule is converted into two ethanol molecules and two carbon dioxide molecules: C 6 H 12 O 6  → 2 C 2 H 5 OH + 2 CO 2 C 2 H 5 OH is the chemical formula for ethanol.

7. Photosynthesis The overall chemical reaction involved in photosynthesis is: 6CO 2  + 6H 2 O (+ light energy) → C 6 H 12 O 6  + 6O 2 . This is the source of the O 2  we breathe, and thus, a significant factor in the concerns about deforestation.  There are two parts to photosynthesis. They are called the light reaction and the dark reaction

8. Acid rain Pure water has a pH of 7.0 (neutral); however, natural, unpolluted rainwater actually has a pH of about 5.6 ( acidicThe acidity of rainwater comes from the natural presence of three substances (CO 2 , NO, and SO 2 ) found in the troposphere (the lowest layer of the atmosphere). carbon dioxide (CO 2 ) is present in the greatest concentration and therefore contributes the most to the natural acidity of rainwater.