As a representative of chemistry classes in junior high and high school, Li Yaowei has a high interest in chemistry, and to this day, he still remembers the reaction principles and chemical reaction equations of many substances, including black powder!

Potassium nitrate, sulfur, and carbon are mixed and ignited to produce potassium sulfide, nitrogen, carbon dioxide, and a small amount of impurities.

This is the reaction principle of black powder, Li Yaoyu was very pleased, and kissed Wu Yao fiercely on the mouth: "Lady, you rest first, I'll go find Qian Ersheng." ”

"Qian Ersheng." Li Yaowei called Qian Ersheng in the living room, "You know saltpeter and sulfur, right?" ”

"Yes."

Li Yaojian was very happy, this kid had an effect, "Give you a task, bring a few people, and collect some saltpeter and sulfur for me, at least ten buckets each." ”

The ancient people were superstitious and admired the way of immortals, so there were many alchemists, and the earliest gunpowder in China was also invented by these alchemists, but it was in the ninth century AD. In the afternoon, Qian Ersheng and a few people came back, carrying many jars, "Jun Gong, we got these saltpeters and sulfur from a few alchemists. ”

"Good." Li Yaoyu was very happy, he thought it would take a lot of time to find it, and told a maid, "Go get some wax." ”

By the way, it also needs carbon, and the proportion of carbon is the highest, so call a servant, "Go to the kitchen, take five or six pieces of charcoal, knock it until it is broken, and bring it to me." ”

After finding the raw materials, Li Yaowei began to prepare for the production of gunpowder with great interest. The women of Fifth Yao were also alarmed and came out to check what he was doing.

"Lady, what are you doing out here?" Li Yaoyu was a little blamed, and he walked around at special times, really.

"It doesn't matter." Fifth Yao shook her head.

Li Yaoyu didn't know what to say, the subordinates prepared the raw materials, Li Yaoyu wanted to go out of the city to test, the potassium sulfide produced by black powder is a harmful substance, which will burn people's skin and eyes. You can't do it at home, it's not good to be in the county, if you don't do it, something will happen, it's better to go out of the city and find an empty and unoccupied place, but the fifth Yao out of the city will definitely follow, after thinking about it, I'll wait a few days before experimenting, "Let's put it first, and we'll talk about it in a few days." ”

After waiting anxiously for two days, the fifth Yao's relatives left, and Li Yaowei's family went out of the city in a mighty way, so shocked that the people around him thought that he was going to abscond with the money.

In the northwest of Nanhai County, there is a piece of wasteland.

"What kind of reputation is Xianggong doing?"

"You'll find out later."

Fifth Yao didn't know what Li Yaoyu was doing, and he didn't want to say it in advance, so he had to watch him tinker attentively and curiously, Fifth Yao knew that he was from the future, and there would be a lot of magical things, but he was looking forward to it.

Li Yaowei asked Qian Ersheng to cut a piece of bamboo, cut a section, mix saltpeter powder, sulfur powder, and charcoal powder into the bamboo tube in a ratio of 10:1:1, then put in a flammable rope, and then plug the mouth with a layer of mud, and finally seal it with a layer of wax, and a simple gunpowder firecracker was completed.

"Don't come out of the carriage." This bamboo tube is a bit big, nearly thirty centimeters, Li Yaojian was afraid that the power would be too great, they were affected, and told them to stay in the carriage, although Li Yaojian knew what the black powder was about, but he had never seen it with his own eyes, and he was still a little unconfident and a little worried. "Qian Ersheng, you guys are optimistic about horses."

Walking to a farther place, Li Yaowei put down the bamboo tube, took out the fire fold, lit the rope, and hurriedly ran back after seeing that the rope began to burn and shortened.

"Xianggong!" Fifth Yao thought he was in danger and shouted nervously.

"It's okay, don't come out."

Li Yaoyu returned to the side of the carriage and looked at the bamboo tube apprehensively, watching the flame of the rope burn to the mouth of the bamboo tube little by little.

"Bang!"

"Ahh

A loud explosion, with the light of fire and thick black smoke, exploded bamboo fragments in all directions, and the nearby mud and rocks also flew everywhere, dust, and frightened several women into a little pale. Li Yaoyu was also taken aback.

"Haha, it worked!" Li Yaoyu shouted excitedly, like a child.

Xiao Xuan was shocked: "What is this, Xianggong?" ”

"That's gunpowder." Li Yaojian said with a smile, "After lighting it, there will be an explosion, which is very powerful." ”

"Gunpowder?" Everyone else didn't understand, looked at him in amazement, and said a line in his heart: Xianggong (Jungong) is too powerful!

Although he remembered the chemical reaction equation and knew the proportion of reactants, he did not know the proportion of potassium nitrate, sulfur and carbon in these saltpeter, sulfur and charcoal. Li Yaowei ran after lighting a firecracker every time he finished watching the power of each explosion. Then after a while, I covered my mouth and nose and went back to check the remnants of the raw materials after the explosion.

It's very cool to play, just like when I was a child, I set off firecrackers with my friends, ran away with a fuse, covered my ears and waited for the firecrackers to explode, and the thieves were excited.

After an afternoon of playing, I roughly concluded that the most suitable mass ratio is 15:2:3, and saltpeter has the largest proportion.

……

"Xianggong, this is the firecracker you mentioned a few days ago?" Wen lived idlely, there was no one around, and the fifth Yao asked Li Yaoji.

"Well, if the ingredients in saltpeter, sulfur, and charcoal ignite together, they will explode."

Regarding the principle of explosion, on the way home, Li Yaojie explained to them that when the mixture burns, a huge amount of air is generated, which instantly explodes the things that block the space, such as bamboo tubes.

"Why do you burn this kind of thing during the Chinese New Year?"

Li Yaoyu shook his head, "The reason for setting off firecrackers is the same as that of you burning firecrackers, but the gunpowder we use now is not so harmful." These things after the explosion of gunpowder, the skin and the eyes can rot once they touch it. ”

Fifth Yao had a pimple on her skin, "So terrible? ”

"Hmm." Li Yaoyu thought thoughtfully, "Let me ask you a question, what will be the result if these things explode in the crowd?" ”

"Dead and wounded."

"That's right." Li Yaoyu sighed, "Our ancestors, originally for alchemy, accidentally invented this kind of thing, and thousands of years later, it was used in war, do you know?" In the years I lived, a few decades ago, a war involving dozens of countries killed and wounded nearly 10,000,000 people. ”

Although the weapons used in World War II were not gunpowder, whether it was bullets or bombs, they were all related to gunpowder.

"Wanwan?" Fifth Yao was dumbfounded, Datang is now less than 100 million people, so many people died in a big war?

"Hmm. Among them, we China have suffered more than 10 million casualties, and they are basically civilians, and it is Japan, that is, the Japanese country, that invades our country! ”

Fifth Yao was also a little sad and angry when she heard Li Yaoji's low words, "So, the last time you saw those two Japanese people, there was some resentment between your eyebrows, and it was also because of this?" ”

Li Yaojian nodded, his eyes became deep, and his tone was a little excited: "I made these gunpowders for a purpose, I want to dedicate them to the country, hoping that the combat power of the Tang Dynasty will be greatly improved, so that the Turks will not dare to invade again!" Let the foreign countries submit to the Tang Dynasty from now on! ”

Historically, these will soon be realized, but Li Yaowei wants to make it happen faster, he can't wait, he can't wait to see: the Tang Dynasty, China, the descendants of Yan and Huang, stand on top of the world!

(End of chapter)