Genius One Second Remember If You Want To Go? Shuo → Net provides you with wonderful novels to read.
This experiment was not only of great practical significance, but it was also an excellent educational opportunity. Therefore, in addition to the participants Agatha, Sylvie, Chavez, and Kyle, Roland had also called over the other members of the Witch Union, Carter, Iron Axe, and Barov. In order to accommodate these twenty or so people, they had chosen the largest laboratory, the fifth laboratory.
Out of consideration for the first time, the fractionation vessel wasn't too big. It was about the height of a person and one meter in diameter, similar to a tower. The inside of the container was divided into three layers. The bottom layer was used for air intake, and the top two layers were used for exhaust.
Before the separation began, Roland gave everyone a simple chemistry lesson. He told them what might happen and asked them a few questions to find the answers for themselves. In addition to attracting the interest of the listeners, it also greatly enhanced the effectiveness of the lesson. This was a trick that chemistry teachers often used.
"… In theory, when Agatha lowers the temperature inside the container, the air will gradually condense into a liquid and drip through the perforated partition to the bottom layer. So when you see fluid accumulating at the bottom, tell us. "
Since he couldn't see it directly, he had to rely on Sylvie to observe through the container and describe the changes, so Roland explained this part in great detail.
Sylvie nodded skeptically. "Can you really see the liquid appear? Could it be the water vapor in the jar? "
"Don't worry, liquid air is light blue, completely different from water vapor," Roland said, waving his hand. "And at that temperature, water vapor has already solidified into ice crystals." He then gestured to Agatha. "Let's begin."
"Wait … don't we need to plug up the hole at the bottom of the container?" she asked.
"We'll block it later. Otherwise, there's too little air in the tank, and we won't be able to see any obvious changes." Since it was just an experiment, Roland chose the simplest way to inhale air. When the temperature in the tank dropped rapidly, the pressure would also drop, and the air from the outside would constantly flow into the tank. During normal production, the loss outweighed the gain, because the air-conditioner would constantly leak out and waste energy. However, Agatha used magic power, and the cooling efficiency was far better than any refrigerator, so Roland did not bother to prepare an air pump to inflate it.
Agatha took a deep breath and pressed her hands on the fractionation column.
In a few seconds, a whistling sound came from the air inlet, which was the sound of the air rushing in. Layers of white frost appeared around the mouth of the tube at a speed visible to the naked eye and continued to expand. The moisture in the air quickly condensed under the overflowing low temperature and adhered to the outer wall of the container. Anna turned the Black Flame into threads and cleaned up the ice crystals that were constantly thickening.
After a while, Sylvie said in surprise, "I see some liquid on the partition, but most of it is white frost."
"The white frost could be water vapor, or it could be crystallized carbon dioxide," Roland explained. "Considering that the carbon dioxide content in the air is very low, most of it should be water vapor."
During production, before the air was pumped into the fractionation column, it had to be dried first. Otherwise, the condensed water vapor would easily block the separator and vent, which would lower the production efficiency.
About 15 minutes later, Sylvie reported that the bottom of the tank was filled with blue liquid. Roland then asked Soroya to block the air inlet and seal it with a coating.
Next was the key heating.
Due to the different boiling points of nitrogen and oxygen, the nitrogen would reach the boiling point first, turn into gas, and escape upward to achieve separation. Roland didn't remember the specific value of this temperature, nor did he have any way to measure it. He could only rely on Agatha. The specific behavior was that when gas was discharged from the vent at the top of the fractionation column, the remaining liquid at the bottom would become bluer and bluer, which meant that the purity of liquid oxygen was constantly increasing.
Fortunately, Agatha was familiar with the control of magic power. She accurately adjusted the cooling range and slowly raised the temperature. After a while, Sylvie also noticed that the liquid surface was boiling. The coated pipe that was connected to the water began to bubble, and Kyle quickly collected several bottles of gas using the drainage gas collection method.
"Is this nitrogen?" Lily curled her lips. "I can't see anything at all."
"This is my first premise," Roland asked. "How do you prove that it is different from air?"
"Ignite," Tilly answered first. "According to 'Elementary Chemistry', combustion requires oxygen. If it is another gas, it should be able to instantly extinguish the burning wood."
"We'll know after cooling it down to liquid again." Agatha thought for a moment and said, "Didn't you say that liquefied nitrogen is colorless?"
"Or we can guide the remaining liquid out of the container to prove that the latter is pure oxygen, which can also prove the diversity of air components," Anna said.
The scene had completely become a stage for the performance of the top students. One test method after another was proposed and then discussed with each other. There were only a few voices left in the laboratory. Roland looked around and found that Nightingale, Andrea, Maggie, and the other witches, as well as the City Hall Director and Chief Knight Carter, were all at a loss. Iron Axe, the commander of the First Army, always maintained the same expression. Probably no matter what Roland said, he would always nod in agreement.
Well, Roland sighed in his heart. It seemed that this chemistry class was slightly beyond the syllabus.
If there were still people who could feel His Highness' joy, perhaps only Kyle Sichi and Chavez were left.
"Your Highness, this is really … magical," the young alchemist exclaimed. "You have proved the correctness of 'Elementary Chemistry'. I'm afraid that no alchemist would have expected that even the air around them is so complicated. "
"With pure oxygen, will we be able to observe even more intense oxidation reactions? I have a lot of experiments that I want to do, "Kyle said excitedly.
Roland nodded, but suddenly another idea popped up in his mind.
Nitrogen was the most important raw material for synthetic ammonia. Under the conditions of high temperature and high pressure catalysts, it could react with hydrogen to produce ammonia. The latter could not only be used to make nitrogen fertilizer, but could also be used to synthesize nitrogen oxides and thus produce nitric acid. But in order to realize this process, there was still a lot of work that needed to be done, such as an air pump, a vacuum tank, and a series of complex reaction equipment. Even if Paper could provide the function of a catalyst, it still needed to be tested repeatedly.
Now, since he had pure oxygen and pure nitrogen, why not directly produce nitric oxide?
Admittedly, the chemical industry chose to use ammonia to produce nitric acid because the reaction between oxygen and nitrogen was an energy-absorbing reaction, so it couldn't be carried out spontaneously. It needed an external supply of energy, such as an electric discharge — through the instantaneous heating of the gas to thousands of degrees by an electric arc. This was also the reason why the soil was more fertile where there was frequent thunder. Because of this, this method required a lot of equipment and consumed a lot of energy, so it wasn't suitable for formal production.
But if there was an urgent need to increase production capacity, this production method was the most efficient. It didn't even need a catalyst, and only needed to continuously discharge … or use other means to reach the high temperature produced by the electric arc.
Naturally, Roland thought of Blackfire.
Blackfire's heating efficiency wasn't any worse than the electric arc, and its burden on Anna was also extremely low. As long as the nitrogen and oxygen were purified and poured into a closed reactor according to the ratio, nitric oxide could be continuously produced.
He decided to try this method.
You've already exceeded your reading limit for today. If you want to read more, please log in.
Login
Select text and click 'Report' to let us know about any bad translation.
