CHEMCA- Chemistry Made Easy

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Quick revision of chromatography for JEE/NEET

- April 06, 2024

- Chromatography is extensively utilized for compound separation, purification, and identification purposes. - According to IUPAC, chromatography is a physical separation method involving two phases: one stationary and one mobile, with components distributed between them. - The stationary phase typically exists as a packed column (column chromatography) or other forms like flat sheets or thin layers adhering to backing materials such as glass (thin-layer chromatography). - In column chromatography, the mobile phase flows through the packed column, while in thin layer chromatography, it moves via capillary action. - Thin film stationary phases can be either liquid or solid, while the mobile phase can be liquid or gas, resulting in various chromatographic techniques. - Partition chromatography involves a thin film of liquid stationary phase adsorbed on an inert support, with the mobile phase being liquid or gas. - Paper chromatography, an example of partition chromatography, utilizes li

Deciphering the Difference: BTech vs. BE

- March 12, 2024

In the realm of higher education, two prominent undergraduate degrees often stand out: Bachelor of Technology (BTech) and Bachelor of Engineering (BE). While both degrees are widely recognized in the field of engineering, there are subtle yet significant differences between them that prospective students should consider when charting their academic path. Let's delve into the nuances of BTech and BE to understand their distinctions and implications. Bachelor of Technology (BTech): BTech programs are typically designed to emphasize the practical application of scientific and engineering principles. These programs often focus on specialized fields such as computer science, electronics, mechanical engineering, civil engineering, and more. BTech degrees are known for their rigorous curriculum that integrates theoretical knowledge with hands-on practical experience. One of the distinguishing features of BTech programs is their emphasis on technology-driven solutions and innovation. Stude

Unveiling the Triumvirate: Science, Engineering, and Technology

- March 12, 2024

In the tapestry of human progress, three intertwined threads stand out prominently: science, engineering, and technology. Each is distinct yet interconnected, forming the backbone of innovation and advancement in our modern world. Understanding the nuances of these disciplines is essential for appreciating their individual contributions and their collective impact on society. Science: The Pursuit of Knowledge Science is the systematic study of the natural world through observation, experimentation, and analysis. It seeks to uncover the fundamental principles governing the universe, from the subatomic realm to the vast expanse of space. At its core, science is driven by curiosity and the quest for understanding. Scientists explore the mysteries of the universe, unraveling the secrets of nature's laws. They formulate hypotheses, conduct experiments, and analyze data to test their theories. From physics and chemistry to biology and astronomy, science encompasses a broad spectrum of di

Green Hydrogen : Powering the Future

- February 28, 2024

Green hydrogen , often heralded as the fuel of the future, holds tremendous promise in the global transition towards sustainable energy systems. As the world grapples with the urgent need to reduce greenhouse gas emissions and mitigate climate change, green hydrogen emerges as a versatile and clean energy carrier with the potential to revolutionize various sectors, including transportation, industry, and electricity generation. This article explores the concept of green hydrogen, its production methods, applications, challenges, and future prospects in the quest for a decarbonized world. Understanding Green Hydrogen Hydrogen, the most abundant element in the universe, has long been recognized as a potential energy carrier due to its high energy density and clean combustion properties. However, the conventional methods of producing hydrogen, such as steam methane reforming (SMR) and coal gasification, rely on fossil fuels and emit significant amounts of carbon dioxide (CO2), contributin

Graphs of Gibbs free energy

- February 09, 2024

Whether a reaction is product-favored, that is, whether the reactants are converted to products under standard-state conditions, is reflected in the sign of its Δ r G° . This equation Δ r G° = Δ r H° − T Δ r S° shows that the sign of Δ r G° depends on the signs of Δ r H° and Δ r S° , and, in some cases, the absolute temperature (which can only have positive values). Four possibilities exist: Both Δ r H° and Δ r S° are positive —an endothermic process with an increase in system entropy. Δ r G° is negative if T Δ r S° > Δ r H° , and positive if T Δ r S° < Δ r H° . Such a process is product-favored at high temperatures and reactant-favored at low temperatures. Both Δ r H° and Δ r S° are negative —an exothermic process with a decrease in system entropy. Δ r G° is negative if | T Δ r S °| < |Δ r H °| and positive if | T Δ r S °| > |Δ r H °|. Such a process is product-favored at low temperatures and reactant-favored at high temperatures. (Remember that | T Δ r S

Different types of enthalpies of reaction

- February 09, 2024

Quickly revise about different types of enthalpies of reaction

Chemical Kinetics - Full notes for JEE/NEET/CBSE

- February 06, 2024

Electrochemistry