有機化学

Questions and answers to complete knowledge problems from basic to difficult problems

1594 questions about the range of organic compounds. It is created based on the past questions of major universities and the latest entrance examination questions. It covers all the knowledge necessary for entrance examinations. (* The range does not deviate from the textbook)

I made questions based on the entrance exam questions as follows.

Tohoku University First half of 2016 (and many others such as the University of Tokyo)

This is because polyvinyl alcohol itself is unstable and immediately changes to the structural isomer [A]. [A] can be obtained by adding water to [B] using mercury (II) sulfate as a catalyst.

[A] Acetaldehyde

[A] Acetylene

In-app questions (excerpts of questions and correct answers only)

Q. [____] occurs when water is added to acetylene using a catalyst. (Does not include intermediates).

A. Acetaldehyde. There is vinyl alcohol in the intermediate, but it immediately changes to acetaldehyde.

Q. Acetaldehyde is produced when water is added to [____] using a catalyst.

A. Acetylene

Tohoku University 2016 first half

When the aqueous solution of [c] is added while cooling the dilute hydrochloric acid solution of aniline to 5 ° C or lower, [d] is generated. When this salt is heated in an acidic aqueous solution, it decomposes while generating a gas [o] to produce compound E.

[C] Sodium nitrite NaNO2

[D] Benzenediazonium chloride C6H5-N2Cl

[O] Nitrogen N2

[Compound E] Phenol C6H5-OH

In-app questions (excerpts of questions and correct answers only)

Q. Select a substance that produces benzenediazonium chloride when aniline is dissolved in dilute hydrochloric acid and added while cooling to 5 ° C or lower. A. Sodium nitrite aqueous solution

Q. Choose the chemical formula of sodium nitrite. A. NaNO2

Q. Select the substance that is produced by dissolving aniline in dilute hydrochloric acid, cooling it to 5 ° C or lower, and adding an aqueous solution of sodium nitrite. A. Benzenediazonium chloride (aqueous solution)

Q. What happens to benzenediazonium chloride (aqueous solution) above 5 ° C? A. Nitrogen, phenol and hydrochloric acid

(The following related issues are also included)

Q. Select the appropriate conditions for producing benzenediazonium chloride from aniline. A. Cool to 5 ℃ or less

Q. What is the reaction when producing benzenediazonium chloride from aniline? A. Diazotization

Questions are asked based on the problems of major universities, and the range of textbooks is incorporated as much as possible in anticipation of difficult problems.

We divide the important points to be held down and create the problem from multiple angles.

(We are sending out entrance exam questions and app questions from Twitter. Please follow @kagaku_y_test)

■ Extracted data (examined while solving entrance exam questions)

30 years from the University of Tokyo (University of Tokyo)

25 years of Kyoto University (Kyoto University)

More than 20 years at Tokyo Institute of Technology (Tokyo Institute of Technology)

20 years of Osaka University (Osaka University)

10 years of Nagoya University (Nagoya University)

Waseda / Keio Faculty of Science and Technology for 7 years

About 20 entrance exam questions for national medical universities

National National Chemistry Entrance Examination Questions for 2 years (about 100 times 2016-2017)

Center test 1990-2021 (main test and supplementary test)

Chemistry and basic chemistry textbooks (Keirinkan, Suken Shuppan, Tokyo Shoseki, etc.) (to match the current course)

* 2021 is also being added.

I tried to match the arrangement as much as possible by comparing it with the textbook. It can also be used for daily learning according to the lesson. (* The order of items may differ depending on the textbook.)

I've included as many terms as possible that are only found in some textbooks. It covers almost all the terms in the textbook.

Although it is not common in entrance exams, I also included the question of having the names of Nobel laureates (or candidates) featured in textbooks answered.

Q. Who won the Nobel Prize in Chemistry in 2001 for his research on chiral-catalyzed asymmetric synthesis (asymmetric hydrogenation)? A. Ryoji Noyori

Q. Select the person who developed Salvarsan and was nominated for the Nobel Prize in Chemistry in 1911 and the Nobel Prize in Physiology or Medicine in 1912 and 1913. A. Sahachiro Hata

The questions of checking the definition of words as needed to help with memory and comprehension are rearranged immediately before and after.

Knowledge that can be used as a hint to guide the correct answer and knowledge that can be used as a hint to remember important items are also becoming problems.

○ Main usage

Basically, you will learn while solving the problem.

■ Confirmation test

Swipe left or right to see the next and previous issues. Tap to move on to the next question. Select an option until the answer is correct, and tap the option to proceed to the next question. You can also swipe to the next without answering correctly. In the confirmation test, I tried to do it manually instead of time so that I could proceed calmly and remember.

■ Test 15

This is a mini test by category (by field).

We will solve each question with a time limit of 20 seconds, and finally we will answer each other. Select once for each question, and the correct and incorrect answers will be displayed when 15 questions are completed or when the end button is used to end halfway. The grades are scored, and the transition of the score is graphed so that you can see it visually. In Test 15, the range of questions will be narrowed down, so you will be able to get a high score in a relatively short period of time by doing it. A mechanism close to the forgetting curve is adopted for the question interval and order.

■ List

You can see a list of questions and answers in the range of questions by category (by field).

■ Score

You can see the report cards of the category (field) test 15 and the diagnostic test (25 questions).

■ Diagnostic test ABCDEF (25 questions)

Same format as test 15. The page is the range of questions for the diagnostic test. A mechanism close to the forgetting curve is adopted for the question interval and order.

■ Review list

A list is created for each menu page. Automatically add the wrong issue to the list

■ My list

A list is created for each menu page. From any screen after the test result, you can select it with the Check button and add it to My List. You can reinforce your weaknesses by listing what you want to remember and focusing on it.

■ Settings

· Ascending or shuffle

You can choose from questions in order, shuffled questions, and so on.

Test 15 and 25 diagnostic tests will only be shuffled.

· You can choose the number of questions from 10 questions, 20 questions, and a loop.

Test 15 and diagnostic test 25 questions are fixed at 15 and 25 questions, respectively.

· Display of choices

No cover when select display. If you select Hide, you can put a cover on it so that you can't see the options immediately. Tap or swipe down to remove the cover.

The choices are always displayed for Test 15 and Diagnostic Test 25 questions.

· From the continuation or from the beginning

Click the button from the continuation to start from the continuation that was solved last time. You can go back to the first with the button from the beginning.

· Normal, Blue, Pink, Green are buttons to change the background color and text color.

The range of use can be expanded by using the app.

Five patterns are available for each of the four color schemes. Press the benzene ring mark on the upper right of the menu screen or setting screen to switch to 5 levels.

· Reset review list, reset my list

When pressed, the items in the list will be zero.

·I send an email

This is an email addressed to the developer. Bugs Bug reports, typographical errors, requests and impressions are accepted by email.

· View blog

Link to support blog. Bugs Bug reports, typographical errors, requests and impressions, etc., please write in the comments.

· View other apps

Another app for developers.

· Developer Twitter

We will send out questions and answers based on the entrance examination questions and tips for memorizing structural formulas. Please follow us.

menu

■ Organic compound 1

Characteristics of organic compounds

Isomer etc.

Determination of structural formula

Alkane structure

The nature of alkanes

Alkene

Alkyne

■ Organic compound 2

Alcohol 1

Melting point and boiling point of alcohol

Alcohol and ether

Alcohol 2

Alcohol 3

ether

Aldehyde 1

Aldehyde 2

Ketone and iodoform reaction

■ Organic compound 3

Carboxylic acid 1

Carboxylic acid 2

Carboxylic acid anhydride

ester

Oils and detergents

Soap

Saponification, reaction with iodine

Calculation of saponification value and iodine value

■ Organic compound 4

Benzene 1

Benzene 2

Benzene 3

Phenol

Phenol manufacturing method

■ Organic compound 5

Aromatic carboxylic acid

Salicylic acid

Nitrogen-containing aromatics 1

Nitrogen-containing aromatics 2

Nitrogen-containing aromatics 3

Separation of aromatic compounds

■ Organic compound 6

Food

Pharmaceuticals

dye

detergent

We will also read the latest entrance exam questions and add new ones if needed.

twitter

https://twitter.com/kagaku_y_test

blog

http://kojimachi.hatenablog.com

The sound effect is used from "Free sound effect material Kurage Kosaku".

http://www.kurage-kosho.info

Other

This app does not require contact with educational institutions such as schools and cram schools, or for personal guidance and learning activities. Also, use on SNS, video sites, live broadcasts, etc. does not require contact as well. If you would like to contact us, please send us an email or blog comment.