Thực hiện các thí nghiệm sau.
(a) Cho một lượng nhỏ Ba vào dung dịch Na₂CO₃.
(b) Cho dung dịch NaOH vào dung dịch Al(NO₃)₃ dư.
(c) Cho dung dịch KHCO₃ dư vào dung dịch KAlO₂.
(d) Cho dung dịch AgNO₃ vào dung dịch Fe(NO₃)₃.
(e) Cho dung dịch NH₃ tới dư vào dung dịch Fe(NO₃)₃.
Sau khi phản ứng kết thúc, số thí nghiệm tạo thành chất kết tủa là

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Nowadays we ____________ how important television ______________for our knowledge about the world.
   

• Choose the best answer for the following sentence:

  You should help your children develop-their good habits and lose ______________.
   

• Choose a word that has different stress pattern:

  royal              talent               engrave              function

• Choose the word that has the underlined part pronounced differently from the rest:

  machine             achievement              charming                chamber

• Choose the word that has the underlined part pronounced differently from the rest:

  admission           television               tension             commission

• Choose the word that has the underlined part pronounced differently from the rest:

  admission           television               tension             commission

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

  Mr Bridges is by far the richest man I know.
  
  

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

  The woman was too weak to lift the basket.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  description              question             attraction             construction

• Choose the word that has the underlined part pronounced differently from the rest:

  famous              about               around               found