Chapter 424： Chen Pingan

A loud voice resounded in the classroom.

/b "Establishment of chemical equilibrium: the state in which the positive and negative reaction rates of a reversible chemical reaction are equal under certain conditions."

"Chemical equilibrium has three characteristics. The first characteristic is that it is a dynamic process; then the second characteristic is that in equilibrium, △rG=0; the last characteristic is that the composition of chemical equilibrium and the The way doesn't matter."

"However, there are also things to pay attention to in chemical equilibrium. Chemical equilibrium is a relative, conditional, and temporary dynamic equilibrium... Next, do students know what a chemical equilibrium constant is?"

Professor Zhai Yang does not need to project PPT in his lectures, and the formal expression mainly relies on the blackboard. For such subjects as mathematics, chemistry, and physics, the blackboard is the yyds!

Formulas and calculations are not expressed through the blackboard, that is soulless!

I don't know why, but Professor Zhai Yang felt that the class at Guanghua was more energetic than that of Heron University.

Yang Yang Sun finished the class, looked down at his watch, and it was ten minutes before the end of get out of class.

"Classmates, since there is still some time, let's review the content of the next class."

Zhai Yang looked at everyone and asked with a smile, "Let's use everyone's favorite way of asking questions, then I'll name them."

There is no need for a roster, because there are 24 students in the entire class.

/b Guanghua College adopts a general education system. There are 87 students in the experimental class. They are generally free to choose courses, but there are some restrictions. For example, there are two sections in physics, two sections in mathematics, one section in biology and one section in biology. Section Chemistry.

This chemistry was taught by him as the course "University Chemistry", which mainly talks about the principles and foundations of the four major chemistry, namely inorganic chemistry, organic chemistry, physical chemistry, and analytical chemistry.

The main purpose of general education is to strengthen students' quality education and inspire innovative thinking, and through a variety of interdisciplinary content, find a major that interests you and is in line with your own development for intensive learning.

Otherwise, you are admitted to majoring in computer science, but in fact, the major that is really suitable for you is physics, so what should you do?

A lot of people will say that it's time to change majors!

However, is it necessary to change majors if you want to?

Different schools have different requirements, the better the school, the harder it is to change majors!

For example, it is difficult to change majors at Peking University, and it is even more difficult to change to a popular major. The first is to have a high final exam result, which ranks in the top 10% of the professional grades in Peking University, which is as strong as the cloud.

Only the top 10% of Peking University's professional grades can transfer majors...

Think about who can be admitted to Peking University, not to mention the need to take professional exams for popular majors such as finance, management, and computer... So let's get rid of this idea.

For Guanghua University's implementation of this characteristic system, Professor Zhai Yang still agrees and appreciates it very much.

A total of 24 people have chosen his course this semester, and they have already memorized everyone's names after taking two classes.

Zhai Yang's eyes swept from left to right, most of the students held their heads high, and there were also a few students who shrank their necks for fear of being called.

"Song Hao."

When the voice fell, a boy in a black T-shirt sitting by the window in the third row was stunned, then stood up with a constipated face, scratched his head, and looked a little helpless.

Zhai Yang raised his eyelids slightly and asked, "What is the essence of the first law of thermodynamics?"

"The essence of the first law of thermodynamics is..."

Song Hao's dandruff was about to come out, but he was really not interested in chemistry, but the school required him to take a chemistry course.

Zhai Yang just looked at Song Hao with a smile on his face and said nothing.

"Ha... so what is the essence..."

Song Hao's voice became lower and lower, and his eyes looked beside him, but the other party shrugged helplessly.

No way, the teaching building of Guanghua College is uniquely designed. In order to facilitate teaching, the classroom is fan-shaped, which is very convenient for teaching.

The 24 people were divided into four rows, and the teacher on the stage could hear it.

Professor Zhai Yang raised his eyebrows and said with a smile: "/b It seems that Song Hao may not be very good at memory, so I will copy the contents of the laws of thermodynamics and basic laws ten times to strengthen my memory, and before class next week. Is it okay for me?"

/bSong Hao grimaced and nodded reluctantly, "/bNo, no problem."

"Then sit down. /u001d" After Professor Zhai Yang finished speaking, his eyes narrowed, the movement of someone just now was more conspicuous.

/b "Just now, Song Hao has been looking at Chen Ping'an. It seems that Chen Ping'an should be aware of it, so let's answer this question."

Song Hao, who just had a pair of chrysanthemums exploded, suddenly turned from sadness to joy, and looked at Chen Ping'an with schadenfreude, his mouth widened and he laughed silently, even winking.

Looking at the **** Song Hao, Chen Ping'an's mouth twitched, and he answered the question calmly, and stepped on the **** next to him calmly.

"The essence of the first law of thermodynamics is the law of energy conservation and transformation."

Song Hao was stepped on and made a "hiss--" sound, with pain on his face, and suddenly he didn't dare to skin.

Professor Zhai Yang nodded and said in agreement: "The answer is good. It seems that Chen Ping'an has a review after returning, so I will help to strengthen it."

"Then talk about the second and third laws of thermodynamics."

Chen Ping'an's expression did not change, but only paused for a few seconds, as if recalling.

"The Second Law of Thermodynamics Reveals the Direction and Limits of Macroscopic Processes..."

Almost without pausing, he answered the question completely in one go.

Originally thought it was over, but Professor Zhai Yang spoke again with a smile.

"Yes, yes, then come up and write down the formulas of enthalpy change and thermochemical equations. I believe this should not be a problem for classmate Chen Ping'an, right?"

Chen Pingan touched his nose and walked directly to the podium.

Pick up the chalk and write.

【Enthalpy change】

[△H=H tense-H final state=△U+pV]

【Thermochemical equation】

【2H(g)+O2=2/bHO(g)】

As soon as I finished writing, the bell rang for the end of get out of class.

Professor Zhai Yang looked at the contents of the blackboard and clapped lightly.

"Chen Ping'an's writing is very correct. Everyone should learn more from Chen Ping'an. Then today's class will end here. We will talk about acid-base balance in the next class. Students remember to spend some time doing prep in the past few days. The homework and the review of these two lessons, let's go to get out of class."

As soon as the words fell, the students who had just sat upright packed up their textbooks and rushed out.

Professor Zhai Yang looked at the professor who was empty in the blink of an eye, and scolded with a smile.

"Are these children a monkey?"

Outside the classroom, a group of departing students were still discussing Professor Zhai Yang.

"It's not that I said, Professor Zhai's class is the most frightening among all the teachers in our school. As long as you walk away a little, you will answer the questions by name." A student complained.

"That's right, but these mentors in our school are all very powerful. Professor Liang Yiqing from Semiconductor (who has been appointed as a full professor) and Professor Ren from the Optical Core Research Center are all better than Professor Zhai. Much more powerful!" Perhaps it was because he was embarrassed in class just now, Song Hao pouted and said.

Chen Ping'an frowned slightly, and couldn't help interrupting Song Hao's words.

"Old Song, you are a little prejudiced. Professor Zhai is a big guy in the domestic chemical industry!"

"What, I have a reason."

Song Hao glanced at Chen Ping'an a little nervously, and said, "The traditional top four in China's chemical industry are: Peking University, Nankai, South Daji University. Just one chemistry school in Jilin University has three state key laboratories, although chemistry is Ludao University. The ace professional, but it is only in the top ten in China, it is completely incomparable!"

Chen Ping'an just shook his head, "What you said is the strength of the school's department, which is correct in theory, but when it comes to personal strength, Professor Zhai Yang was dug by President Zhang of Ludao University at MIT, and is well-known in China. , The status is very strong, and even known as the North Huang Nan Zhai in the chemistry class, the first person in southern chemistry!"

Listening to Chen Ping'an's explanation, Song Hao and others were immediately dumbfounded. Is Professor Zhai Yang, who usually has no air in his lectures, so powerful?

However, Zhai Yang himself, as mentioned by Chen Ping'an, still just came out of the classroom.

Leaving the teaching building on foot, the mental outlook of the students on the campus is far more vibrant than when he first came to Guanghua University.

Zhai Yang thought of the students in the class just now, especially the student named Chen Pingan, and was filled with emotion.

Another pair of their own students at Lushima University.

He couldn't help sighing: "The young people today are really amazing!"

The Department of Chemistry of Ludao University was established in 1923. During the major adjustment of disciplines in the 1950s, it did not hurt the lifeblood of the Institute of Chemistry. Therefore, Ludao University is now quite powerful in chemistry. It is ranked 8th in the ranking, and it is also an A-level subject.

However, in Ludao University there is a saying called: scholastic institute, management institute, other institutes.

From this, one can imagine how strong the management of Ludao University is.

Even if it is the eighth chemistry, its status in the school is still a bit awkward. If nothing else, the tiankeng majors such as biochemical and environmental materials are all red card majors for employment, and the eighth is useless!

Don't listen to some people talking about the wide range of employment in chemistry, but in fact, they usually go to research institutes, but most of the research institutes started as graduate students. Even the undergraduates of the Department of Chemistry of Ludao University, most of them changed careers.

When the 19th class of graduate students graduated from the Department of Chemistry, there were a total of 217 students with masters and doctorates. Only 125 people had a place to go. understood.

This is the hard part for students majoring in biochemical and environmental materials, either to study for a Ph.D. or to change careers.

In addition, the Department of Chemistry of Heron University can change majors, which has led to many undergraduates studying hard, all in order to be able to change majors and get out of Tiankeng.

Here at Guanghua College, perhaps because of the unique education system, students do not have much views on their majors. After all, they choose the direction of follow-up study in their sophomore year, and they are more pure in learning.

And he found that among these 24 students, when it comes to natural talent...

"Principal Chen is really amazing!"

Thinking of thisProfessor Zhai Yang couldn't help but look at the Guanghua Building, the most remarkable and spectacular building on campus, with admiration.

The 87 students in the experimental class of Guanghua College are undoubtedly the gold that came out of the big waves. The IQ of these students is not inferior to the students of Ludao University. The problem.

It is normal for a university with 20,000 people to have dozens of good seedlings, no matter how garbage it is.

in the leaving car.

Zhai Yang glanced at the final outline of Guanghua University through the rearview mirror, and had an impression in his heart.

He smiled softly, even he himself felt a little absurd.

"Maybe one day in the future, it is not impossible for Guanghua University to surpass Heron University..."

Just then, the phone rang.

Bluetooth headset is connected.

"Principal Zhang, what's the matter?"

The teasing voice of President Zhang Yue of Lushima University sounded.

"Professor Zhai, you should have finished your class at Guanghua's place now, how do you feel?"

"Do you feel it? I feel pretty good." Zhai Yang thought about it and said with a smile without concealing it.

President Zhang smiled lightly and said, "Oh? That's right. I really have something to talk about with Professor Zhai about Guanghua University. I don't know when it's convenient?"

Zhai Yang glanced at his watch and said directly, "Just now, I just happen to be going to the laboratory, and then I will go to see you, Principal Zhang."

"Hahaha, okay, then I'll prepare tea and wait for Professor Zhai's arrival."

The phone hangs up.

Zhai Yang's eyes turned slightly, and the corners of his mouth rose slightly.

"I probably know why."

ps: 3500 word chapter! Ask for a recommendation ticket, ask for a monthly ticket!

Next chapter at 10pm.

Two old friends of mine got married today.