Chapter 1093: Alchemist who has become a demon! (under)

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In a certain episode of the TV series "The Palace", the heroine Luo Qingchuan

remembered a passage from a teacher in a modern school in order to escape from

the underground palace: "Sulfuric acid has existed in ancient China, but it

was not called sulfuric acid at the time, but green Alum is not used in

industrial production. It is usually used to treat diseases such as typhoid

fever and dysentery. There are historical records. The ancient thieves ignited

green alum collected from pharmacies with fire to make it into a liquid and

corrode wealthy families. Stealing from the walls shows that sulfuric acid was

widely used more than a thousand years ago."

Although green alum can indeed be used to make sulfuric acid, the statement in

the TV series is very problematic!

According to "Compendium of Materia Medica", green vitriol is a traditional

Chinese medicine that can treat typhoid fever, malaria and other diseases. But

green alum cannot burn, so it is definitely wrong to use the method of

igniting green alum to prepare sulfuric acid.

In the first "Chemistry Laboratory" of Datang, the second half of Wang Ji's

words made Li Zexuan curious. He asked: "Some early experiences? What

experience did Mr. Wang have in his early years?"

Wang Ji blushed and said with some shame: "Lao Xu was a Taoist priest in his

early years, and he also practiced elixir..."

Li Zexuan widened his eyes, looked at Wang Ji like an alien, and said, "Mr.

Wang, have you ever practiced an elixir before?"

He only knew that Wang Ji had a good literary talent and had been a Taoist

priest, but he had never thought that this old man was an alchemist, and he

really found a treasure in the academy... he found a ghost! Ghost!

Wang Ji was so embarrassed, he quickly coughed twice and said:

"Ahem! Those are all things from the past, the mountain leader must not

mention it again! Don't mention it again!"

Now Wang Ji, who has studied "Chemistry", has completely understood how

ridiculous the pill refining practices at the beginning were. The elixir pill

he cultivated were nothing more than poison pill! If it hadn't been for Li

Zexuan's question today, he would never have mentioned the matter of alchemy

back then. In his opinion, this matter should be counted as a stain in his

life!

Li Zexuan pursed his lips and smiled, and said, "Haha! Then don't mention it!

Mr. Wang, keep talking."

Wang Ji glanced at Li Zexuan with a "sorrowful" look, and then continued:

"Back then, when the old man made alchemy, he cast green alum in the furnace,

and the furnace was corroded by a small piece! A few days ago, the old man

suddenly remembered this accidentally, and combined with the mountain leader

you wrote In the "Chemistry" textbook, I felt that the reason why the pill

furnace was corroded was probably because the green alum was decomposed at

high temperature to produce sulfuric acid!"

Li Zexuan's expression was complicated upon hearing this.

In his previous life, he had read a post in Post Bar, saying: Why did Western

alchemy develop into chemistry, while Eastern alchemy only left some illusory

elixir?

In fact, this argument is a bit too one-sided. Ancient Chinese alchemists were

not useless. They invented gunpowder, invented sulfuric acid, and discovered

redox, metal replacement, and acid-base neutralization reactions.

For example, the alchemist Ge Hong of the Eastern Jin Dynasty successfully

summed up "the burning of cinnabar becomes mercury, and the accumulation of

changes turns into cinnabar." This is the first time that mankind has obtained

the same substance as natural products through chemical means, which can be

called a great creation;

From the Han to the Tang dynasty, many alchemists’ writings recorded that iron

was placed in a solution of bile vitriol (copper sulfate) to replace copper.

This method is called the bile copper immersion method. It does not require

high-temperature smelting to obtain copper powder. It is easy to operate and

low in cost. It is the earliest metal replacement reaction in the world;

From 650 to 683 AD (in the reign of Emperor Gaozong of the Tang Dynasty), the

alchemist Gugangzi recorded in his book "The Yellow Emperor Jiuding Shendan

Sutra" Volume Nine that "the method of extracting the essence of stone gall",

namely dry distillation of stone gall ) To obtain sulfuric acid. If expressed

by a chemical equation, it is:

cuso4·5h2o=cuso4＋5h2o

cuso4=cuo＋so3↑

so3＋h2o=h2so4

This is the earliest and well-documented case of sulfuric acid production in

the world!

The alchemists in the West initially made precious metals such as copper,

iron, and lead into precious gold and silver. Their purpose was to increase

wealth. In the Medieval West ~www.mtlnovel.com~ alchemists believed that all

metals are composed of mercury and sulfur. Mercury is the source of all

metals. Sulfur is a common component of all combustible substances. Silver

contains the purest mercury and sulfur.

Therefore, in their opinion, the difference between ordinary metals and

precious gold and silver lies in the difference in the ratio and purity of

mercury and sulfur contained in them. The use of a "philosopher's stone"

philosopher can change the nature of the metal. Base metals are converted into

precious metals.

This "philosopher's stone" is respected by people as the wise man's stone. It

is sacred and has magical omnipotent attributes. Countless alchemists have

gone through thousands of mountains and rivers and tried their best to find

the legendary wise man's stone.

In this way, what the alchemists have long been engaged in is this kind of

invalid labor in the mineral, plant, and animal kingdoms.

From the ancient Greek era to the Middle Ages, people spent more than a

thousand years on alchemy experiments. In the end, the dream of turning stones

into gold did not come true, but the pursuit of one thousand years did not

make them give up their dreams!

Therefore, from this perspective, Western alchemy in the Middle Ages

represents a spirit of scientific inquiry. Perhaps this is why Western alchemy

has been continuously developed and finally found its home on the road of

science. Although alchemy in Arab countries developed earlier, it only

remained in the primitive form of chemistry.

Looking at Western alchemy with dialectical thinking, it can be seen that

Western alchemy has gone from a blind pursuit of a little bit of stone into

gold in the early stage, and then developed to the exploration and knowledge

of natural materials. The painstaking explorations of the early alchemists

probably did not have chemistry in the modern sense.

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