When she first thought of corrosion, Jun Qianqian planned to make sodium hydroxide.

Anyone who has seen the pictures of chicken feet soaked in sulfuric acid and sodium hydroxide in the compulsory chemistry textbooks will feel that caustic soda is stronger than sulfuric acid.

After all, this is something that is often used to destroy corpses in TV dramas!

But Jun Qianqian was stuck in this step of making pure ammonia, and the stuck one died, and the dead one couldn't die anymore.

"I was naïve."

Jun Qianqian looked at the experimental process that could only be aborted, and the whole person was decadent like a frosted eggplant.

"So what do we do?"

Daze also regretted that they had been preparing for this experiment for a long time, and the instruments were all ready-made, and now the whole process could not be realized, not only because the experiment failed, but also because they didn't know what to use to completely destroy the beast's lair.

"It's okay, strong alkali can't be, we can also try strong acid."

And the process of changing from sodium hydroxide to making concentrated sulfuric acid was not all smooth sailing, even if they changed directions, they still tossed for a long time.

Especially Jun Qianqian's current physical condition, when the laboratory is full of irritating gases, she can't enter the door at all, otherwise a lot of adverse reactions will be one after another, and she can't fool her by saying that it's okay.

Spit out the gastric mucosa on the spot, believe it or not.

Except for Jun Qianqian, the rest of the precision operations can only be taken care of by Daze, and without a helper, their speed can't go up.

"Jun Qianqian is a strong person who can drip a quarter of a drop with a burette."

Daze's peak level is half a drop, and others can't even do a stable half drop.

"I can't even get into the lab now, so it's useless to say it'......"

The production process of concentrated sulfuric acid is not easy at all, but the good thing is that the raw materials are sufficient, and the method she chooses is to start from pyrite, obtain sulfur trioxide through calcination, extraction and other means, and then find a way to dissolve these gases in water as much as possible.

The principle sounds simple, calcined iron ore alone is about to toss them all apart.

However, the concentrated sulfuric acid, which is finally more than 60% pure, was finally made.

It seems that all the thunder has been stepped on in the laboratory stage, and when the finished concentrated sulfuric acid is taken for corrosion testing, it is unbelievable.

"It really works!"

"Why is there so much white gas?"

The lair closest to the mainland of the southern country is outside the bluegrass-river valley defense line, Jun Qianqian stayed in Zihua and waited for the news, Daze took the finished product to test, and there was a long list of people behind him.

Chabu has been guarding the lair with the defenders of the defense line these days, and after blowing the lair open once, he has to prevent it from repairing it again.

They have done this work several times, and if they can't open the hard shell underground, this repeated work is time-consuming and labor-intensive, and cannot be maintained for a long time.

After Daze poured concentrated sulfuric acid into it, a puff of white water vapor immediately rose, startling everyone.

"Stay away, everybody! This thing will blind you if you touch it! ”

Daze hurriedly reminded them.

Concentrated sulfuric acid is highly corrosive and dehydrating, and can remove the water from the organic matter in the substance, so that water vapor will be formed.

There are also some sulfuric acid components in these water vapors, which can be very uncomfortable when touched on the body, especially the more fragile mucous membranes such as the eyes and respiratory tract.

"I can't see it clearly!"

The crowd didn't dare to get too close, and waited for a while for the vapor and hissing sound to disappear before they stepped forward to check again.

As soon as they leaned their heads over, they saw a fierce spurt of black gas from the ground, which was thicker than the color of the beast, as if it could absorb all the light.

"Be careful!"

The person who reacted quickly hurriedly pulled and was still stunned, and everyone fell in a circle at the entrance of the cave, and the huge black formed the shape of a mushroom cloud, which rose to a very high height in the air before gradually dispersing.

Is the underground in which they live empty? How can there be so much black gas?

Everyone was frightened, and they couldn't come back to their senses for a long time, and Daze was also the first time he saw the black qi of the beast, he had been staying in the capital before, and he looked at the pictures of the enemy.

"There's still one down there!"

What's even more terrifying is not the black gas that rises into the air and dissipates, but when you look at the entrance of the cave, the black gas in the ground flows like water, and the tumbling appearance makes people's scalps numb.

"Now let's see if we can blow this place up."

Daze was afraid that these black gases would gush out again, and the hole corroded by sulfuric acid was only the size of a well, and he didn't know how much black gas there was underground.

"I've got it!"

They poured all the gun/powder and gasoline into the hole, which was as if there was no bottom, and nothing could be heard when they poured it in.

When they were ready, they lit the interior with a fuse, and with a loud bang, the entire border seemed to be shaken.

At the same time, Jun Qianqian's heart also sighed.

"What's the situation?"

Jun Qianqian, who was holding an embroidery needle in her hand, poked a needle on an iron thimble, and did not make a very dramatic classic drama in the TV series.

"Be careful!"

Pelo watched her movements and quickly took her hand to check it.

"It's not tied."

Jun Qianqian's answer.

With so much force just used, if you really pierce your hand, your fingers can pierce it.

Thanks for the thimble!

"If you are so absent-minded, don't do it, I'm really afraid that you will pierce yourself again."

Today, Jun Qianqian has back pain and goes home early to rest, but whether she is sitting or lying flat, she feels uncomfortable, so she can only half-lie and half-lean on the pillow, and she can't sleep, so she has to hold the embroidery needle and embroider the pattern.

In Pelo's opinion, Jun Qianqian's embroidered flowers and plants, I don't know what chemical spectrum I thought it was.

But it's good to pass the time, if not for the fact that she always gets it.

"It stands to reason that my hands should be very skillful, I'm the king of the quarter!"

Jun Qianqian also stopped embroidery, and if she continued like this, she needed not a thimble, but a pair of iron gloves.

"Can that be the same?"

Pelo couldn't laugh and sighed, her intelligence and intelligence are all grown in national affairs, and she really has no aesthetic cells at all.

"I don't know if the test on the eldest brother's side went well."

Jun Qianqian put down the embroidered cloth, and Pello pulled the blanket on her body up and gently patted her back.

"Don't worry, it's absolutely fine."

Daze's experiment was not only successful, but it could even be said that it was too successful.

More than a meter of stone above the beast's lair had been blown open and collapsed, and now a huge crater had been blown out of the border, and it was almost impossible to see the edge at a glance.