Chapter 134: Is this also in your calculations?

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"Have you forgotten the quality of the watch glass..." Shen Yiyun lifted her glasses in a panic, pressed a few times against the electronic scale, then swallowed and spit, looking at the display again.
Trembling more violently.
The expression also tightened.
"This...impossible...how could there be so many..." Shen Yiyun trembled and asked Shi Yang, "You added a milliliter of piperidine, am I wrong?"
"Yes." Shi Yang still has no courage to look directly at the elder sister, only revealing a plump side face for the elder sister to look up, "but not an extra ml, but 0.78 ml."
Shen Yiyun scratched his head and exclaimed: "A drop has 0.05 ml, how could you be accurate to 0.01!"
"Otherwise what do you do with a high-precision syringe?" Shi Yang then pointed at the syringe on the table. "Within 0.5 ml, I can just use my hand."
"Even if it is so..." Shen Yiyun asked the table with his hands in his arms, "Why is it 0.78? Why?"
"Humph." Shi Yang raised his eyes sharply, his mouth slightly raised, "Feel."
"Wow..." Shen Yiyun's glasses fell, almost swearing, "Can this also be based on feeling?"
Li Zheng sandwiched in the middle, only felt the atmosphere between the two was terrifying, it seemed even more terrifying than decisive battle against the top of the Forbidden City.
Even more terrifying.
He doesn't understand very well.
It doesn't matter, ask shamefully.
"Here, I'm more dish...a little bit." Li Zheng walked to the stage and picked up the piperidine reagent bottle. "Piperidine is used as a catalyst in this reaction, right?"
Shen Yiyun replied: "Yes... Normally, the volume ratio of piperidine to diethyl malonate should be 1:1. Converted, in our reagent concentration, the volume ratio should be 1:10. That is, every 10 ml of diethyl malonate corresponds to 1 ml of piperidine."
"This is just the most conservative strategy." Shi Yang laughed. "Conservative, it is impossible to make a high yield."
Shen Yiyun stared at the white crystal in front of her eyes: "The problem is here. Increasing the piperidine dose, on the surface, can indeed increase the yield, but the basicity and carbon anions will also increase, which will lead to its intermediate production. The coumarin-3-carboxylic acid ethyl ester further generates amide, which greatly reduces the yield."
"So, heating and refluxing should be faster." Shi Yang sneered with his fingers moving, "Compress the standard heating process of one and a half hours to within an hour, you know, heating and refluxing is dynamic, internal pressure and reaction liquidity, moment They are all changing, so it is impossible to achieve the fastest reaction rate with only a conservative and constant temperature. Dynamic adjustment is only possible if I keep observing it all the time."
"This... this is also in your calculations?" Shen Yiyun was shocked. "I thought you were just robbing time..."
"It's really robbing time, but it's not a calculation, it's a feeling." Shi Yang emphasized again.
"It feels..." Shen Yiyun was a little incomprehensible. "How can a chemical experiment be based on feeling..."
"It's just that you haven't done enough."
"..." Shen Yiyun scolded, pounding the table with anger.
I... didn't do enough?
Just one month after the research...I was stuffed into the laboratory by my tutor...Working 10 hours a day...
Not much?
For the first time, Shen Yiyun wanted to beat people.
In Li Zheng's vision, a quiet older sister is gradually evolving into a grumpy old sister.
But at the same time, Li Zheng was also in the middle of Shi Yang's rhetoric, desperately absorbing the squirting spirit.
A really good chef cooks definitely does not formulate to follow the standard process.
He will dynamically adjust the cooking method and the dosage of condiments according to factors such as the freshness of the ingredients, the fat and tenderness, the feel of the pot, the oil, and so on.
These adjustments can never be quantified.
It's a feeling, only a feeling!
Only after being soaked for many years and being self-improved, unwilling to fall into some kind of relaxed fixed process, always thinking of the chef who constantly challenges himself, can cultivate the feeling.
In contrast...
Li Zheng looked at Shen Yiyun who was panting at the supporting table.
Although the eldest sister is also one of the best in the world.
Shackled by the laborious and repetitive work of the laboratory...
Gradually followed the process and gave up brainstorming.
Enjoying the convenience brought by shortcuts, ignoring the growth of thorns.
School sister.
you.
Already lost.
"Then... that can't be so much..." Shen Yiyun stared at the crystal, "The biggest product loss of this experiment is that one of the steps must be washed with 50% ethanol, but at the same time, the ester will also be in ethanol. Dissolution... Product loss in this step is inevitable."
"Of course I know." Shi Yang walked to the wall step by step and silently patted a small refrigerator. "The sleepy person can't see the morning sun."
Shen Yiyun instantly glared: "Ethanol... iced??"
Li Zheng gave a double blow.
Wonderful.
As the temperature decreases, the reaction will also slow down, but it has little effect on the washing effect.
At the same time, the precious esters are kept to the maximum.
Wonderful.
"Fortunately, the freezing point of ethanol is low enough." Shi Yang raised his glasses. "Is there any problem, Sister."
Shen Yiyun lowered his head gradually, his eyes empty: "No...no."
This guy is only a sophomore...
Is my national money worth mentioning...
Four years undergraduate.
Graduated for two years.
What am I doing?
He worked in the laboratory for 10 hours every day for more than a year.
What are you doing?
I at Jihua Dahuayuan...
Is it worth mentioning...
Just when she was on the verge of collapse, Li Zheng walked over in time.
"Shi Yang is indeed terrifying, but I believe that you must be talented to learn from you," Li Zheng sighed. "Just, if you treat the experiment as a job, you will certainly lose interest?"
what.
Shen Yiyun moaned in his heart.
Yeah, I don't know when to start.
The most annoying experiment.
Hurry up and finish today's task.
When I was full of brains, I had to eat and sleep.
this is us.
A group of people known as research animals.
"I... I don't deserve to teach you..." Shen Yiyun took off his eyes, hung his head, and sighed in a lonely way. "I'll tell the instructor, let's find a fellow doctor."
"Don't, Shi Yang is not a mortal, even if the mentor comes by himself, he is afraid of suffering," Li Zheng said emotionally, "Sister Xue, although he doesn't need you, but I need you, at least these days, take a break, don't go The lab is working, right here, starting from the beginning, teaching me little by little, let's try to get back the fun of chemistry together, isn't that good?"
what.
Shen Yiyun moved again.
If only you.
This is wonderful.
Shen Yiyun then rubbed his face, put on his glasses, and tried his best to raise the teacher's dignity.
"Student, I... I am very strict," she said, avoiding Li Zheng's eyes.
"Not strict what am I doing here?"
"I am ambitious." Shen Yiyun immediately turned to Shi Yang, and suddenly his face was covered with frost. "I can't teach you, you go."
"?????" Shi Yang, who was leaning on the refrigerator and resting his forehead on his palm, placed the chemical strongman POSS, and almost planted it in place.
Your mother, why?
Isn't the girl looking forward to the strong?
Am I not strong enough?
At this time, I hope to get together, Li Zheng and Shen Yiyun, who are packing up the experimental equipment.
Shi Yang suddenly realized.
It's motherhood!
Study the motherhood of the second sister!
Caring for the motherhood of the weak!
Think about it, the popular male idols are not all like a thin skin and tender baby.
Is an idol a tough guy?
Oh shit.
Good for you, Li Zheng.
Pretending to be such a dish, it turned out to be a scumbag routine.
Is this... this also in your calculations?