Reborn as an oil tycoon

Chapter 238 Super Reversal!

Not just Wang Ling and Ye Mao.

After hearing Liu Shang's bold words, even Fu Liang and the others slapped their foreheads.

I shouted in my heart that it's miserable, it's miserable!
This time, I'm afraid that Liu Shang really went too far with his big talk, and there is no way to end it.

The other students also looked skeptical.

Just now the two senior brothers Wang Ling and Ye Mao really showed their strength.

It is far from being comparable to undergraduates who have just entered their junior year.

And Liu Shang, why did he choose to say those big words that are seriously inconsistent with his own strength and ability?
Is it just for rebellion?
Under the increasingly suspicious eyes of everyone, Liu Shang also began to weigh the medicines he needed.

At this time, the breath of everyone present was paused.

It's just because Liu Shang's series of actions of weighing the medicine are done in one go, concise and accurate.

Normal laboratories require that the amount of medicines weighed and recorded is two digits after the decimal point.

But Liu Shang is the last four.

But that's it, he weighed the medicine faster than the last two Wang Ling and Ye Mao!

Good guy!
This is simply a human flesh electronic scale!
Just when everyone was extremely shocked and their eyes widened in surprise, Fu Liang did not forget to say something.

"You don't know, my second brother's family runs a canteen."

"He has been in charge of making soy sauce for others since he was a child, that's why he is so accurate!"

His words drew sniggers from several female classmates, and in exchange Liu Shang gave him a look of "sympathy".

Subsequently, Liu Shang started his formal experimental operation.

What is the fixing of the constant temperature water bath, the connection and assembly of the three-neck flask, water separator, spherical condenser, thermometer and other utensils...

Waiting for this series of operations, they are all like flowing water.

Natural, precise and fast!
It's perfect!

If they hadn't seen it with their own eyes, everyone couldn't believe their eyes.

If you compare it with Liu Shang's operation at this time, the operations of Wang Ling and Ye Mao who were praised by everyone just now.

I'm afraid it's not even a passing grade!
"My God, no?"

"Liu Shang is too amazing, isn't he?!!!"

"It's unimaginable. When we tried to connect these vessels just now, we were in such a hurry."

"Look at Liu Shang, what does it mean to lift weights lightly?!"

"Now……"

"It seems that I really believed what Liu Shang said before, that this kind of experiment can be done with eyes closed!"

"Ahem, to be honest, it seems that Liu Shang is faster than me in assembling utensils with his eyes closed..."

"Hey, if anyone is said to be born for chemistry, I think it must be Liu Shang."

While everyone was discussing and praising, Wang Ling and Ye Mao's expressions turned extremely ugly.

There is a disgusting feeling of being fed a mouthful of shit!
While Liu Shang was doing the experiment, he did not forget to kindly explain everyone's doubts.

Share the main points and morals about this experiment.

"...the reaction of this first step does not require a catalyst."

"And the reaction rate is very fast."

"When the phthalic anhydride solid is completely dissolved in the n-butanol liquid, the reaction is complete."

"At this time, the conversion rate of phthalic anhydride is almost [-]%..."

"The real difficulty of this experiment is in the second step."

"The reaction rate of this step is relatively slow, and it needs to be carried out under higher temperature and sulfuric acid catalysis."

"Also, this reaction is a reversible reaction."

"If it is not handled properly, the rate of completed products will be extremely low, which is what we often call failed products."

As he said that, Liu Shang still pointed to the reagent bottle made by Wang Ling and Ye Mao, taking them as a model.

This time, the veins in the hands of the two clenched fists were exposed, and their faces became extremely gloomy.

Liu Shang ignored them and continued talking while doing experiments.

"The technical process of this esterification reaction is very demanding on the details."

"If the reaction temperature is too high, such as exceeding 180°, the product will undergo hydrolysis reaction under acidic conditions."

"If the temperature is too low or the concentration of alkali is too high, saponification or emulsification will easily occur..."

Following Liu Shang's experiments and explanations, some students have begun to take out their notebooks and record them carefully.

"...And the unique experimental procedure I just carried out is to add an excess of neutral ethanol to our reaction stock solution."

"There are two purposes for this."

"One, is to push our reaction in the direction of forming an ester."

"While speeding up the reaction rate, it also improves the purity and yield of the ester."

"The second is to use too much ethanol as a dehydrating agent."

"At normal pressure, alcohol forms a binary azeotrope with water, which can be distilled off to remove excess water..."

"As I said just now, our reaction to form a diester is a reversible equilibrium reaction."

"Removing the water can make the reaction go the way we want it to."

"However, the manual and manual removal method like the two of them before is very inefficient."

"This also led to their low product rate, turning them into failures whose product value is lower than the purification cost!"

……

Finally, Liu Shang's experimental product was released perfectly, and was surrounded by the crowd, who were amazed and took pictures to commemorate it.

And Liu Shang also came to the sink, and picked up the sponge that Wang Ling had dropped there before.

While washing his hands, he did not forget to say plainly: "Although this experiment is simple, it is very representative."

"Ten years ago, the esterification reaction method in textbooks was still acceptable."

"But today, ten years later, when I look at it again, there will be very big shortcomings and shortcomings."

"You two have been from the third year to the third year of graduate school. If you still follow the textbooks and what the teacher taught you, you won't use your brains to think."

"Without my own skepticism and flexibility."

"Then even if you finish your doctorate, it's just an extra degree certificate."

"you!!!!!"

After hearing his words, Wang Ling and Ye Mao couldn't hold back anymore and finally ran away.

But at this moment, applause suddenly came from the front of the laboratory.

Everyone looked around, only to see Fang Xingguo sitting on a chair there, applauding continuously.

His eyes were full of joy and admiration.

Because everyone was too focused just now, they didn't notice when Fang Xingguo walked into the laboratory.

"Teacher Fang?"

"Mr. Fang..."

At this time, Wang Ling and Ye Mao were dumbfounded, and instantly changed back to their persona who were knowledgeable, reasonable, determined, studious, and good-natured babies.

But Fang Xingguo ignored them, walked directly to the laboratory bench, and held the reagent bottle of the product produced by Liu Shang in front of his eyes for a closer look.

"it is good!"

"Okay!"

"It's really worthy of being a high-ranking apprentice trained by the old director Xu Tiande himself."

"In terms of teaching and educating people, old Dean Xu Tiande is really much better than my generation, it really makes people ashamed!"

"If all the teachers can be like the old courtyard, the students they cultivate will have the character and knowledge of Liu Shang."

"Then why is our country unhappy?!!!"

With that said, Fang Xingguo came to Liu Shang again.

"Liu Shang, you really didn't disappoint me, and you even gave me a real surprise."

"To tell you the truth, it's not my turn to teach the experimental classes of your undergraduates."

"But this time I broke the rules and snatched this semester's class, just to see if you are as good as other teachers praise you?!"

"Liu Shang, I have carefully understood your situation."

"English and mathematics are praised by teachers in every possible way, with full marks, let alone this professional course."

"If you have the idea of ​​taking the postgraduate entrance examination in your senior year, remember to come to me anytime."

"I took advantage of the fruit cultivated by the old dean Xu Tiande so hard, and picked it myself."

(End of this chapter)