Để phân biệt 3 dung dịch H₂NCH₂COOH, CH₃COOH và C₂H₅NH₂ chỉ cần dùng 1 thuốc thử là: 

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  Were it not for the money, this job wouldn't be worthwhile.
  
  

• Choose one sentence that has the same meaning as the root one:

  As soon as he arrived at the airport, he called home.
  
  

• Choose one sentence that has the same meaning as the root one:

  I like Robinson Crusoe. He is the main character in a book by Daniel Defoe.
  
  

• Choose one sentence that has the same meaning as the root one:

  There was a hurricane in August 1992 over West Africa. This hurricane was named Andrew.
  
  

• Choose one sentence that has the same meaning as the root one:

  There are a lot of people. The people like to do things together.
  
  

• Choose one sentence that has the same meaning as the root one:

  Sue lives in a house. The house is opposite my house.
  
  

• Choose one sentence that has the same meaning as the root one:

  The plants may develop differently. The plants grow on that island.
  
  

• Choose one sentence that has the same meaning as the root one:

  Sam emphasized the importance of being thoughtful toward one another.
  
  

• Choose one sentence that has the same meaning as the root one:

  Unlike her friends, Jane prefers an independent life.
  
  

• Choose one sentence that has the same meaning as the root one:

  I used to live in Happy Valley.