Demon husband, super good!

There is a feeling that "the excitement is theirs, it has nothing to do with her, she is just a spectator".

Qu Ning slowly took back his sight and closed the window. He didn't want to see it or smell it again.

But the next moment, almost between the electric light and flint, Qu Ning suddenly brightened his eyes, pushed the window that had just been closed open, and looked at the man who was performing the flamethrower on the street below.

Burning sulfur powder in the air to produce such a flame is clearly an oxidation reaction of sulfur in the air. In short, it can also be said to be a very simple chemical reaction.

In many chemical reactions, there are some methods to melt iron.

How could she be so stupid that she never thought of it!

So what can be used to melt iron?

Qu Ning scratched his head and immediately tried to think about hydrochloric acid, sulfuric acid, nitric acid and so on.

According to the current situation, the first two are not easy to make, but nitric acid is OK!

Thinking about this, Qu Ning couldn't wait for a moment. He immediately opened the door and went downstairs to find a way to buy some common raw materials, such as saltpeter, porcelain bottles, small iron blocks and so on.

Before long, all these things were bought, and a little firewood was also bought. He wrapped them up tightly. Qu Ning rushed back to the inn, ran past a group of entertainers, and went back to lay down a large ingot of silver. But for their inspiration, she would not have thought of this method.

The entertainers have been rewarded a lot, but they are the first to give such a large ingot of silver all at once. They can't help looking at the person who left.

-

Back in the Inn room, Qu Ning closed the door tightly and tied it with a wooden bolt. Then he put down the package and opened it. He took out the contents one by one and put them in order to start his own experiment.

The main component of nitre is potassium nitrate.

Calcine the saltpeter in a closed container, which is now a large porcelain bottle. I still remember that in chemistry class, the teacher made it clear that nitric acid only reacts with metals, but has no effect on ceramics.

When the calcination is finished, nitrogen dioxide will be generated.

Traning dissolves the nitrogen dioxide in water and makes it from simple nitric acid.

Under the candlelight, I can see that the nitric acid is colorless, with a faint yellow.

Qu Ning immediately put the small iron into it and patiently looked at it. As expected, he saw the iron react.

This method is really feasible!

For a moment, Qu Ning was so happy that he wanted to set off firecrackers to celebrate. He turned to open the window and breathe fresh air. Iron reacts with nitric acid to produce nitric oxide, which is toxic and cannot be smelled much.

It's very late. The street outside is empty.

At this moment, Qu Ning couldn't wait to save the prisoner. In his heart, he said to himself, "tomorrow, as soon as it's light, she will go out of the city and find a way to enter the Huguo temple.".

-

The next day, it was dawn.

Qu Ning took the newly made nitric acid in large porcelain bottles, bought some breakfast at will, and drove out of the city.

On the other side, Bai Yizhu, who lives in the post station temporarily, also goes to the Huguo temple. Huguo temple is a royal temple. It is the most famous and effective temple in Huachen kingdom. When you finally come to the capital, why don't you go to the Huguo temple to offer incense and ask for a lot.

At the foot of the mountain, Qu Ning stopped the carriage and looked up. Today, she is dressed in light blue men's clothes, with long hair tied on her head and a wooden hairpin. It's no ordinary dress for the common people.