After finishing all this, Yaro tidied the ground a little, and then took out the skull mask.
What is attached to this skull mask is not the formal spell 'Walk Underwater', nor is it the constant intermediate spell 'Underwater Breathing', but as long as water is added to the mezzanine, Yaro can ignore the surrounding air environment.
The reason for all this is the magic pattern that can generate tiny currents.
That’s right, it’s electrolysis.
The skull mask is equivalent to a beautifully made electrolytic cell. It relies on the power of magic patterns in this world and uses magic stones as energy to generate a subtle current, which continuously electrolyzes the water in the interlayer into oxygen and hydrogen.
This was knowledge he learned in his previous life, and now he was going to use the mask to continue to use this knowledge.
——Making caustic soda required for saponification reaction.
Caustic soda, also known as sodium hydroxide, is a strong base and does not exist in nature.
There are many ways to prepare caustic soda, but Yaro has limited materials, so he plans to use electrolysis of saturated salt water to obtain it.
After saturating saturated brine, sodium hydroxide, chlorine, and hydrogen can be obtained.
Among them, chlorine and hydrogen fly into the air, and only sodium hydroxide remains in the liquid.
Air pollution?
What's that?
The wizard doesn't like this!
After enough sodium hydroxide was produced, Yaro took out some saltpeter. When the saltpeter is blended into water, it will absorb heat and continuously cool down, and the water inside will gradually freeze.
Caustic soda will condense at a few degrees, but salt will condense at minus ten degrees. Caustic soda can be extracted using the crystallization method.
Of course, the caustic soda extracted in this way will inevitably contain impurities, but Yarrow's concentration requirements are not high, so it's almost enough.
Put the prepared caustic soda aside and let the water flow out.
Taking out the grease accumulated over the past few months, it’s not much—perhaps not as much as the two barrels of vegetable oil in the previous life.
Perrin Castle already lacks livestock, and the servants in the castle also need to eat oil. Yaro himself is a big oil consumer. He can accumulate so much oil thanks to the help of white deer in hunting.
Next, Yaro prepares to use the knowledge of high school in his previous life - saponification reaction.
The saponification reaction is not difficult and does not require other additives. However, if you want to speed up the reaction, you can add some alcohol to reduce the consistency of the oil and make it easier for the caustic soda to penetrate into the oil.
Yaro didn't prepare alcohol, so he didn't think about those things.
Add oil, heat, wait until the animal fat at the freezing point is dissolved, and then add the caustic soda prepared previously.
The next thing is to wait. In order to prevent the oil from re-condensing, and because this process also requires a temperature of 90-100 degrees Celsius, Yaro added a pot of water in the middle and used the water temperature to maintain the reaction process.
Taking advantage of this free time, Yaro first took out some food from the space ring. While eating, he observed the situation in Perrin Castle.
Fortunately, in just half a day, Perrin Castle did not change much.
Seeing that there was no sign of a trigger point in the 'bait', Yaro turned aside the telescope and went back to making tools.
The saponification reaction does not use too much caustic soda, and Yarrow has its own use for the remaining caustic soda.
Dissolve caustic soda, continuously add carbon dioxide into it, and gradually turn it into soda ash.
With soda ash, making glass is simple.
The addition of soda ash can not only lower the temperature required for making glass, but also reduce the bubbles contained in the glass.
Of course, there are advantages and disadvantages. Glass containing impurities will reduce its mechanical strength and chemical stability, so limestone is usually added to ordinary glass.
Yarrow doesn't have anywhere to find limestone now, so he can only put less soda ash and increase the temperature to continue making glass.
As long as you are willing to let the fire melt the stone, it is not difficult to make glass even if you lack some materials.
Large beakers, tubes, glass rods... As time goes by, various utensils continue to take shape in Yarrow's hands.
When the sky was completely dark, Yaro finally made these utensils.
At this time, the saponification reaction was finally completed.
Use the light spell to illuminate and move the glider a little further to ensure that no light is directed toward the castle.
Add saturated salt water to the saponification reactor, and a layer of milky white viscous material will soon appear in the solution.
-This is soap.
The remaining ones are the by-products of the saponification reaction - glycerol.
Of course, glycerin also contains a lot of salt and water.
If you continue to heat, the salt will not evaporate, so it will stay - collect the 'mysterious gas' and cool it to get 'mysterious liquid a'.
Collect the gas by burning sulfuric acid, add oxygen and blend it into water to obtain 'mysterious liquid b'.
Put saltpeter into 'mysterious liquid b', heat it, collect the gas, and mix it with water to get 'mysterious liquid c'.
Prepare the concentration, mix the three items...wait.
…
Boom...!
A muffled thunder exploded inexplicably in the dark sky.
A white light lit up, then gradually subsided after a moment.
The cool night breeze rustled the surrounding leaves.
Yaro raised his head and glanced at the sky, wondering in his mind: "Is it going to rain? The sky is getting dark so fast."
But he wasn't worried. With the hang glider as the roof, the rain couldn't get to him.
Just need to deal with the surrounding gaps to prevent wind and rain from blowing in and affecting your rest at night.
…
Even after a hard day's work, little Heli still doesn't feel tired.
Not to mention that she came from a poor family, but simply that those things were explained by Lord Yaluo himself.
She just doesn't think there are enough things like this that can help adults.
If Lord Yaro hadn't allowed him to light the lamp, and if the servants hadn't wanted to rest, she wanted to continue finishing the work, so why would she feel tired?
Speaking of Lord Yaro, little Heli thought of Miss White Deer inexplicably.
"Why didn't Miss Bailu come back with you? Did she go home directly? Did she sing that song to Master Yaro?"
"Miss Bailu is so beautiful, she matches you so well!"
"Unlike me... I am thin and small, and my hair is dry and red."
The little girl's emotions came and went quickly. She only felt sorry for herself for a moment, and then cheered up again.
"Since I can't continue to help Lord Yaro purify materials at night, then I will be the generator that Lord said!"
"When you come back next time, I will show you the generator!"
Thinking of Lord Yaro, the little girl's eyes turned into two crescents when she smiled, and she jumped up and down when she walked.
Jogging to the familiar laboratory, Hurley carefully picked up the ordinary-looking stone from the experimental table, and then took out the notes stored close to her from her arms.
"What should I do with the generator?"
The little girl murmured and looked through it carefully.
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