Question

Срочно поможіть Допишіть рівняння реакцій Ca + O2 → . Вкажіть: 1) формулу утвореного оксиду; 2) тип реакції; 3) коефіцієнт, який поставите біля оксиду.

Answer 1

Ответ:2Ca+O2→2CaO2

1) CaO2

2) Реакція з‘єднання

3) 2

Объяснение:

Answer 2

2Ca+O2->2CaO
формула оксида - CaO
тип реакции - реакция соединения
коэффициент, стоящий возле оксида - 2

Answer 3

Equation and Reaction Type

The balanced equation for the reaction Ca + O2 → [unknown oxide] can be determined by considering the valence of each element involved. Calcium (Ca) has a valence of +2, while oxygen (O) has a valence of -2. To balance the equation, we need to ensure that the total charges on both sides of the equation are equal.

Based on this information, we can determine the following:

1) The formula of the oxide formed: CaO. Calcium combines with oxygen to form calcium oxide.

2) The type of reaction: This is a combination or synthesis reaction. In a combination reaction, two or more substances combine to form a single product.

3) The coefficient to be placed in front of the oxide: The coefficient for calcium oxide (CaO) is 2. This ensures that the equation is balanced, with two calcium atoms combining with two oxygen atoms to form two molecules of calcium oxide.

Therefore, the complete balanced equation is:

2Ca + O2 → 2CaO