competition wallah hydrogen
Tell the real story of Physics Wallah.
Physics Wallah's real story is quite inspiring. Alakh Pandey was just an ordinary teacher with an extraordinary idea. He noticed that many students were struggling with physics, especially those from middle - class and lower - middle - class families who couldn't afford expensive coaching classes. So, he started creating content on YouTube. His videos were not only informative but also engaging. He would break down difficult topics into smaller, digestible parts. As his popularity grew, he used the revenue from ads and sponsorships to improve the quality of his content and eventually launched his own educational platform, which has now become a major player in the online education space in India, providing quality education at a reasonable cost.
1 answer
2024-12-05 21:29
1:1 reaction of lithium hydrogen and hydrogen bionate
When the ratio of the reaction between the two was 1:1, the chemical equation was NaHSO4 +Ba(SH)2==H2O+ NaOx + BaSO4. The reaction produced water, the precipitations of soda, and the precipitations of bis sulfuric acid.
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1 answer
2026-07-02 14:33
What is the principle of the reaction between a hydrogen and a hydrogen?
The reaction mechanism between alkyls and halos was a substitution reaction of free radical. In the reaction, the halo (such as pure chorine, pure bromine, and not chorine water or bromine water) under the conditions of light/heat/free radical initiator, X-X was split into two X-free radical, X -and the HX-H on the alkyls formed hydrogen halo, and the alkyls left the alkyls free radical, which then reacted with X-X to form X -, and the cycle reaction could continue. The reaction between an aromatic compound (such as alkyne and alkyne) and a hydrogen atom was mainly an addition reaction. The double bond in an aromatic compound was a sigma-bond and a pi-bond. The pi-bond was more unstable and easy to break. The double bond opened to become a single bond, and the broken small half bond formed a covalent-bond with the hydrogen atom. In addition, the addition reaction of the hydrogen atom with the unsatured carbon could also be carried out. Aromatic compounds could only be substituted with a catalyst (such as iron trihalide, aluminum trihalide, iron powder, etc.), except for very active compounds (such as aromatic amine, vitamins, etc.). Fatty acid could only be substituted with a catalyst of red phosphorus, which generally produced an alpha substituted product.
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1 answer
2026-07-16 20:35
hydrogen airship
The hydrogen airship was a type of airship that used hydrogen as the filling gas.
At standard atmospheric pressure and 0 ° C, its density was 0.0899g/L. This characteristic allowed hydrogen to be used to fill airships to generate buoyancy to lift them off. However, hydrogen was flammable and not very safe. For example, in 1937, when the Hindeburg airship was about to land, the hydrogen had to be released. At that time, there was no wind, and the hydrogen could not be dispersed. It mixed with oxygen, and the static sparks caused by the contact between the cable and the ground caused an explosion. Moreover, the airship's outer shell was made of aluminum, which caused a thermal reaction that caused it to burn rapidly. After this accident, humans became more cautious in the choice of gas filling in airships. Modern airships were mostly filled with helium. However, hydrogen could be produced in a variety of ways, while helium was a rare gas that was difficult and expensive to produce.
The early airship development went through three eras of human-powered, steam-powered, and electric powered. It was used in the military field during World War I. In terms of origin, airships developed from hot air balloons. The first recorded hot air balloon appeared in 1783, and the first airship appeared in 1784. At the beginning of its birth, hydrogen airships were mainly used in the field of transportation. Now, with the development of technology and other factors, new airships (mostly non-hydrogen-filled) were widely used in transportation, aerial photography, remote sensing, advertising, and aerial exploration.
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1 answer
2026-02-13 19:53
Reaction equation of the reaction between the hydrogen and the hydrogen gas
The chemical equation for the reaction of a halo gas (such as Cl2 <anno data-annotation-id ="cdf3c12 - 4c10 - 4c10 - 4c10 - 9c1111111124"> Cl2 </anno>) with a solution of NaClO </anno> is: The chemical equation for the reaction of Bromine and Iodine at room temperature with a solution of NaOx at room temperature is X <2>+2NaOx = NaX + NaOx + H <2> O <3>(X <3> represents either Bror I <3>).
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2026-07-12 15:12
Mixed reaction of hydrogen peroxid and acidic hydrogen iodinate
The mixture of hydrogen peroxide-hydrogen peroxide-acid and hydrogen iodinate-acid would result in an oxido-reduction reaction. The reaction equation is [H2O2 + 2Hi]. In this reaction, the valency of the oxygen element in the hydrogen peroxid decreased from-1 to-2, showing its oxidisation, while the valency of the iodine-element in the hydrogen iodinate increased from-1 to 0, showing its reduction.
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2026-07-13 02:09
What are the reaction mechanisms of hydrogen production from hydrogen?
The reaction mechanism of hydrogen production from gasoline mainly had the following methods:
1. The steam reforming reaction (MPR) of the gasoline was one of the most common methods. The reaction equation is CH30H + H2O → CO2+ 3H2. In this reaction, the reaction between the alcohol and water vapor occurred under the effect of a catalyst to produce carbon dioxide and hydrogen. This reaction process was relatively complicated, involving the activation of the alcohol molecules, the breaking and reassembly of chemical bonds, and many other steps.
2. The reaction equation is CH30H + 1/2O2 → CO2+ 2H2. In this reaction, the partial oxidization of the oxygen and the alcohol produced carbon dioxide as well as hydrogen. The characteristic of this method was that the reaction speed was relatively fast, but the control of the reaction process was relatively difficult. It was necessary to accurately control the amount of oxygen supplied to avoid over-oxidization or incomplete reactions.
3. Alcohol autothermal reforming (ATR): It was a hydrogen production method that combined the steam reforming reaction and the partial oxidization reaction of the alcohol. The reaction equation can be roughly expressed as CH30H + xO2 +(1 - x)H2O → CO2+ (3 - 2x)H2. This method used the heat generated by the partial oxygen reaction to supply the steam reforming reaction, thus improving the energy utilization efficiency. It had certain advantages in practical applications.
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1 answer
2026-08-09 07:27
What are the key aspects of the real story of Physics Wallah?
One key aspect is its origin from a need for affordable education. Alakh Pandey identified the gap in the market for quality yet inexpensive physics teaching. Another aspect is the power of online platforms. By using YouTube, he was able to reach a large number of students without the need for a big infrastructure. Also, his teaching methodology, which was student - friendly and focused on concept clarity, played a huge role in the success of Physics Wallah.
2 answers
2024-12-03 06:45
What does hydrogen hydrogen react with to form sulfur dioxide?
Sulfur dioxide can be formed by the reaction of hydrogen dioxide and oxygen. The chemical equation is 2H ^S +3O ^= 2H ^O +2SO2 (combustion under sufficient oxygen conditions).
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1 answer
2026-07-13 12:58
Horrifying hydrogen monoxide
Dihydrogen monoxidewas once used in pranks and was described as "terrifying." In the pranks, it was emphasized that it had many negative effects, such as being the main component of acid rain, being extremely addictive, people who stopped consuming it would die within four days, and there was no cure in the world. But in fact, hydrogen dioxide was water (chemical formula H <2> O). The so-called "horror" was just fake scientific content made up by people's gullibility of one-sided analysis. For example, rusting was a normal phenomenon of water reacting with iron and other metals. Drowning was an accident that could not be attributed to the "harm" of water itself. Drinking water when thirsty was also a normal physiological need, not an addiction.
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1 answer
2026-02-17 06:09
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