Aunt Yang's eyes darkened: "Potassium permanganate, what is this?" Sweet, I don't understand what you said. ”

Gan Tian thought for a while, and changed to a better understanding: "Is it the kind prescribed by the doctor when treating hemorrhoids sitz bath?" Let's think about it carefully, has anyone ever gone to the hospital to prescribe this, and the doctor asked him to make a basin of water, and pour some into it and it will turn into a purple-red liquid? It can reduce inflammation and relieve itching, take a sitz bath for a few minutes, and it will not itch. ”

The villagers at the scene shook their heads, not wanting people to know about their privacy:

"I haven't had hemorrhoids!"

"I don't either, I don't know, I don't know!"

However, some uncles and aunts at the scene tried hard to recall in their hearts that the medicine prescribed by the doctor for treating hemorrhoids was indeed purple-red water when poured into clear water, which was similar to the phenomenon of the young man falling down just now.

Sweet sees through it and doesn't say it, but there are many people who have never had hemorrhoids, and Sweet changed his words: "It's the solution we give watermelon and winter melon to treat wilt." Rice seeds and cabbage seeds are soaked in potassium permanganate for ten minutes, rinsed and sterilized. ”

Aunt Yang suddenly reacted: "It turned out to be that, I have a bottle at home, which is used to disinfect seeds, and can also treat rice blast, tomato virus disease, watermelon wilt, and cabbage soft rot, which is non-toxic and tasteless, and it is particularly effective." ”

Other villagers also chimed in: "I also have rice seeds soaked in that thing, which can improve the germination rate, and it is said that it can kill the germs attached to the surface of the seeds, and the key is that the thief is cheap!" ”

When it comes to crops, the villagers have hands-on experience.

"So, it's really not dirty water with a lot of bacteria?"

"Then it's not like killing the bacteria without leaving a piece of armor?"

"But the water is clear, so what's going on?"

The villagers began to talk about it again, waiting for Sweet to tell them the truth.

Gan Tian said: "In fact, it is very simple, potassium permanganate and vitamin C, or potassium permanganate and oxalic acid and other reducing agents have a redox reaction, which can fade into clear water. ”

The young man who sold the goods was exposed by Gan Tian, and he was so angry that he rolled up his sleeves and was about to rush over to beat Gan Tian.

"You girl is full of female yellow, see if I don't break your mouth! …… Yes...... It hurts, it hurts! Let go, let go! ”

He looked vicious, raised his hand and wanted to teach Gantian a lesson, but he didn't want Gantian to clasp his wrist, clasp his arm back, raise his leg and kick his knee socket violently, instantly pressing him to one knee on the ground.

The young man wanted to resist but couldn't break free of the sweetness, he was half angry and scolded: "Slut, let go!" ”

As if he hadn't heard, Gan Tian subdued him with one hand, fumbled in his pocket with the other, and finally found two vitamin C injections in his trouser pocket.

Gan Tian looked down: "Sure enough, it's vitamin C!" ”

Gan Tian kicked the liar and pinched two small vitamin C injections: "Did you see it?" He has a vitamin C injection hidden in his pocket, which makes potassium permanganate purple-red water turn into clear water, which is this small vitamin C injection, not any functional underwear. If you don't believe it, whoever goes home and gets a bottle of potassium permanganate, I will verify it on the spot for everyone to see. ”

Some villagers approached to see the small potion, which really said vitamin C injection.

"Is it really vitamin C?"

"Why does vitamin C make potassium permanganate water water?"

"I'm me, I'm going to go home and get it, and I'll be back right away!"

The villagers, whose homes were nearby, rushed home.

The young man who couldn't get up after being kicked to the ground by Gan Tian wanted to run when he saw this, but was quickly subdued by the villagers.

Another young man, who wanted to drive away, was also stopped by the villagers.

When the villagers retrieved a bottle of potassium permanganate, Director Jiang and the photographer also arrived, and Director Jiang gave the photographer a look: Take a picture of me!

At this time, Gan Tian asked people to go to the well at the entrance of the village to fetch a basin of water, she poured the potassium permanganate that the village name took from home into the basin, stirred it with a wooden stick, and soon the water turned into a purple-red liquid.

The name of the village surrounding her suddenly dawned.

"Gan Lao's little granddaughter is right, it's really potassium permanganate, not dirty water full of bacteria, we were almost deceived!"

"No, I'm ready to pay for two pairs of panties."

Gan Tian broke a vitamin C injection again, poured the injection into the water, continued to stir, and said to the onlookers: "Everyone looks good, will the purple-red liquid turn into clear water?" ”

A moment later, exclamations were heard from the scene.

"It's changed! It's changed! It's really changed! ”

"What's going on? Amazing? ”

"It turns out that the secret is really not in the underwear, but in the vitamin C injection, sweet, tell us, why is this?"

It must be said that more people may not be deceived.

Gan Tian said: "The principle is very simple, that is, middle school students know a little knowledge of chemistry, vitamin C and potassium permanganate have undergone redox." Vitamin C contains a carboxyl group, which is reducible, and the manganese in potassium permanganate is +7 valence, which has strong oxidizing properties, and the two undergo oxygen reaction, and the manganese ions change from +7 to +4, and the solution changes from purple to colorless. ”

Many of the villagers present nodded their heads as if they didn't understand.

Tian Tian said: "It doesn't matter if you don't understand, you just need to know that potassium permanganate and vitamin C can fade when mixed together."

Draw inferences from one case and apply it to life, if you use potassium permanganate in the future, your hands and clothes are accidentally dyed, and you soak them in vitamin C water, and the color will fade quickly.

If you accidentally ingest potassium permanganate, you can also take a high dose of vitamin C gastric lavage to relieve potassium permanganate poisoning.

Even if the white shirt at home turns beige after wearing it for a long time, you can first throw the clothes into potassium permanganate water and soak them for two hours, then wring out the clothes and continue to soak them in vitamin C water. ”

When the villagers heard this, they all said that their knowledge had increased!

Netizens in the live broadcast room also praised it.

[Vitamin C and potassium permanganate, so simple? Please take the knees of the scumbag, Get it, it's amazing! 】

[My son did this little experiment in kindergarten, these two liars are so hateful, they deceive the country old people with things that children know about paper! 】

[With iodophor + vitamin C, it can also fade. 】

[Kiwi pinch one, or lemon, the same is true, the last time my hand was soaked black by potassium permanganate, it was washed with lemon and faded. 】

[I hate these people who go to the countryside to sell goods to deceive the elderly, everyone didn't know what kind of tricks those scammers used before, but now the ten miles of marshmallow are called scammers on the spot, haha, it is cool! ] 】