Cho các phương trình ion rút gọn của các phản ứng giữa các dung dịch muối, giữa các kim loại với các dung dịch muối:

a) Cu + 2Ag⁺ Cu²⁺ + 2Ag.

b) Fe + Zn²⁺  Fe²⁺ + Zn.

c) Al + 3Na⁺  Al³⁺ + 3Na.

d) Fe + 2Fe³⁺  3Fe²⁺.

e) Fe²⁺+ Ag⁺  Fe³⁺+ Ag.

f) Mg + Al³⁺  Mg²⁺+ Al.

Những phương trình viết đúng là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  temple                    palace                     event                    ancient

• Choose a word that has different stress pattern:

  develop                    fabulous                     festival                 emperor

• Choose a word that has different stress pattern:

  enthronement                       influence                    industry                 capital

• Choose a word that has different stress pattern:

  refer                     highlight                    beauty                     tourist

• Choose the best answer for the following sentence:

  We could not work ____________ these bad conditions any longer.
   

• Choose the best answer for the following sentence:

  There is a lot of variation between the regions ____________ average income.
  

• Choose the best answer for the following sentence:

  Their house is close ____________ Thien Mu pagoda.
  
  

• Choose the best answer for the following sentence:

  With its ____________ climate, the country attracts both winter and summer sports enthusiasts. 

• Choose the best answer for the following sentence:

  The only autobiography ever published by a member of Japan’s ______________ family, Princess Chichibu, was The Silver Drum.
   

• Choose the best answer for the following sentence:

  As a consequence of expansionism by some European countries, many ____________ cultures suffer from being invaded.