Hòa tan hoàn toàn m gam hỗn hợp X gồm 2 muối khan Fe₂(SO₄)₃ và FeSO₄ vào nước. Dung dịch thu được phản ứng hoàn toàn với 1,58g KMnO₄ trong môi trường axit H₂SO₄ dư. Cũng m gam X tác dụng với dung dịch HNO₃ đặc nóng dư thì thu được V lít NO₂ duy nhất (đktc). Giá trị của V 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:

  The workmen finished, and then Mr. Jones came home.
  
  

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

  The Mayor is opening the new theatre on Saturday.
  
  

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

  He was exhausted, but he finished the marathon race.
  
  

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

  subsidy                   upper                    culture                       supportive

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

  dissolve                  passage                   discussing                  pessimist

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

  precedes                   blames                       eliminates                      apologizes

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

  good                  took                  food                     wool

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

  charity                technology                      achievement                    cheese

• Choose a word that has different stress pattern:

  expand                    require                   attract                  argue

• Choose a word that has different stress pattern:

  conical                    commitment                     general                       compliment