Question

Реакции идущие без катализатора,называются?

Answer 1

Некаталитические (простые)

Answer 2

Реакции идущие без катализатора называются некаталитические

Answer 3

Reactions that occur without a catalyst are called uncatalyzed reactions.

Uncatalyzed reactions are chemical reactions that proceed without the presence of a catalyst. A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It achieves this by providing an alternative reaction pathway with lower activation energy.

In contrast, uncatalyzed reactions occur naturally without the assistance of a catalyst. These reactions may proceed at a slower rate compared to catalyzed reactions because they rely solely on the collision of reactant molecules to overcome the activation energy barrier.

Here are a few examples of uncatalyzed reactions:

1. The combustion of methane gas (CH4) in the presence of oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) is an uncatalyzed reaction. The balanced equation for this reaction is:

CH4 + 2O2 -> CO2 + 2H2O

2. The thermal decomposition of calcium carbonate (CaCO3) to produce calcium oxide (CaO) and carbon dioxide (CO2) is another example of an uncatalyzed reaction. The balanced equation for this reaction is:

CaCO3 -> CaO + CO2

3. The reaction between hydrogen gas (H2) and iodine gas (I2) to produce hydrogen iodide (HI) is also an uncatalyzed reaction. The balanced equation for this reaction is:

H2 + I2 -> 2HI

These reactions occur spontaneously without the need for a catalyst to facilitate the reaction. However, the presence of a catalyst can significantly increase the rate of these reactions.

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