Aztec Eternals

The long wind blew across Lake Texcoco, the people on Tianhuo Island, and the long white feathers in the boy's hands. Blue sky and white clouds, islands in the lake. Green smoke and mist, everything about the boy in black looks like a picture scroll.

Shulot sat upright on the grass, with the white paper flat between his legs, and a wooden board underneath, and the quill above it danced lightly, writing strange symbols from time to time. Since the paper was made, his writing tools have been improved again: white paper, quill with blue ink, is much more delicate than charcoal and wood.

Berthard swept across the crowd silently, and the warriors relaxed their guard knowingly and waited patiently. Seeing the waiting female workers, the samurai chief thought for a moment, his eyes suddenly brightened. Immediately, he smiled and waved, motioning for the potter girl to come over, then handed out the clay pot of ink in his hand, and stepped back ten steps.

After taking the clay pot, Talea frowned and smiled. Then, she held the blue ink pot in her white hands, and sat next to the boy with her legs crossed.

Xiulot first wrote down KNO3 soil salt, C charcoal, and S sulfur on the left side of the white paper, and then wrote N2 nitrogen and CO2 carbon dioxide on the right side. Then, with a sad sigh, he wrote K? S? . Why didn't you study hard back then? .

"Could K be K2O? Could S be SO2? What is the process of oxidation and reduction?" Talea listened attentively, but only heard His Highness's godlike murmur. closer.

Xiulot thought about it for a moment, and decided to start from scratch and write out the periodic table of elements first. He picked up the pen and dipped the ink, and didn't pay attention to Talea beside him, but just sniffed the faint fragrance. Well, the ink smells very pleasant.

Immediately, the boy wrote an H at the beginning, and he got stuck for a while before he continued to write C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, ?, K, Ca, forget it later, or leave some room for future chemists.

Xiulot looked at his masterpiece and smiled with satisfaction and confidence. This will be an epoch-making contribution that will change the future of mankind in advance!

Beside him, Talea opened her mouth slightly, and stared at His Highness ecstatically, her heart was moved by the self-confidence and publicity at that moment.

After imagining for a moment, the boy began to formally deduce the complete process of the combustion reaction of gunpowder. First of all, if there is no C and S, KNO3 will be heated and decomposed to generate K2O potassium oxide N2 nitrogen and O2 oxygen, and the balance should be like this:

"4KNO3 → 2K2O + 2N2↑+ 5O2↑"

Next, Xiulot pondered slightly, and wrote S and C under O2 in turn. There are S sulfur and C charcoal in the gunpowder, but the S sulfur is more active and should be burned first to generate SO2 or SO3. Then, when the temperature rises to three or four hundred degrees, the C charcoal can undergo an oxidation reaction and continue to release heat.

"Hey, K2O plus H2O is KOH, so it is strongly alkaline. Since K2O is strongly alkaline, it reacts with acidic oxides first, um, it should be SO2 or SO3." Talea's eyes widened, and her ears moved slightly . She looked at the mysterious symbols, stared at the profile of His Highness, and fantasized about the communication between the god and the king.

Xiulot was thinking seriously while writing down the equation.

"K2O + SO2 → K2SO3 and then O2 oxygen, no matter what, after fully oxidized it should be K2SO4 and then what?" Talea heard the distress in His Highness's words, it seems that the communication of the gods is not smooth ? She also became worried.

The boy was lost in thought again. He supported his forehead with his hands, and thought for a long time. At this time, the combustion temperature should be very high, enough for the simple substance C to undergo oxidation reaction, so the hexavalent S in K2SO4 should be reduced by C. Under the condition of sufficient C, S should be reduced to negative divalent, just combined with K.

After careful consideration, Xiulot continued to write.

"K2SO4 + 2C → K2S + 2CO2↑"

At this point, all intermediate steps are roughly connected. The young man thought about it deeply. First, the unstable KNO3 soil nitrate was decomposed, and then the low-ignition point S sulfur was oxidized. After the temperature continued to rise, it was the high-ignition point C oxidation that released heat. The whole reaction will produce a large amount of gas and release a huge amount of heat. In combustion, SO2 is the early oxidation product, and in the best complete ratio, the final product is K2S!

Logically, there was no problem, and Xiulot smiled confidently again. He picked up the pen and dipped it in the ink, and took another deep breath of the fragrance.

"2KNO3 + 3C + S = K2S + N2↑+ 3CO2↑"

This is the best ratio for black powder to completely burn and react. The mass ratio of the reactants in the reaction formula is exactly the weight ratio of the three raw materials in the black powder!

Afterwards, the young man focused on calculating the molar mass again. In KNO3, nitrogen is 14, oxygen is 16, potassium and potassium are slightly smaller than calcium, and calcium is 40. Potassium should be 39, so 2KNO3 is 202, 3C is 36, and S is 32.

Therefore, according to the calculation results, the best ratio of black powder should be: 202 earth nitrate, 32 sulfur, and 36 charcoal, that is, 74.6%, 11.9%, and 13.5%. In an actual explosion, charcoal is often not completely combustible, so it should be slightly more, instead of sulfur, to become 75:10:15, that is, 15 parts of soil nitrate, 2 parts of sulfur, and 3 parts of charcoal!

Xiu Luote looked back at the formula of "one nitrate, two sulfur and three charcoal", only then did he realize that the "one" in saltpeter should refer to 1 catty, and it is 16 taels in the old catty, while the "two" in sulfur It is 2 taels, and the "three" of charcoal is 3 taels. Just in line with the calculated 15, 2, 3.

"I see!" Finally deduced the ratio of gunpowder, a joyful smile appeared on Shulot's face. Immediately, the boy threw away the pen and paper, and got up excitedly from the ground, when his upper shoulder suddenly bumped into something soft.

Hearing a soft cry, the potter girl threw her head back and fell backwards. Her soft long hair brushed against the boy's face, blowing a gust of wind. At the moment of weightlessness, she stretched out her hands, hugged His Highness's arm in time, and pulled it down with her whole body weight.

Shulot turned his head when he heard the sound, but saw Talea who exclaimed. He was startled, and stopped his subconscious defensive movements. Immediately, he was pulled vigorously, his footing was unstable, his footsteps slipped, and his center of gravity quickly lost balance. In just two breaths, he was completely weightless, and fell down with the potter girl, and there was another soft cry from under him.

Shulot pressed on it sideways, feeling the soft body, and his heartbeat suddenly accelerated. He turned his head, and in front of his eyes were Talea's bright eyes, beautiful face, and long loose hair. He heard the breath of the potter's girl close at hand, and the lingering deodorant at the end of his nose. The boy suddenly lost his mind.

Talea opened her eyes wide, looked at His Highness's face, felt the boy's body, and slowly blushed. Then, she closed her eyes suddenly, like a waiting kapok, blooming with attractive colors.

Seeing this scene, there was silence in the workshop, and the warriors looked at each other. After a while, the female workers started booing boldly. Everyone waited solemnly for the "revelation" for a long time, but it was such an exciting development. Not far away, the silence on Bertard's face disappeared, and he smiled happily amidst the vicissitudes of life. He spoke in a low voice, and was about to command everyone to retreat.

Shulot was stunned for a moment, shook his head vigorously, and then struggled to get up from the ground. Then he pulled Talea up off the ground as well, and dusted her off carefully.

Afterwards, the boy took a few deep breaths before speaking calmly.

"Each pottery pot has 15 parts of soil salt, 2 parts of sulfur, and 3 parts of charcoal. The reconstitution of gunpowder is not allowed to be disclosed!"