Chemical reactions occur when molecules or atoms collide so that the bonds betwe

Question

Chemical reactions occur when molecules or atoms collide so that the bonds between atom bonds form. Breaking the bonds of the reactants requires energy; whereas, bond formation releases s break and new energy Select the statements regarding energy changes during a reaction that are true. Reactants must collide, with proper orientation and with energy greater than or equal to the activation energy for a reaction to occur. When the activation energy is high, the reaction rate is fast. activation energy, Ea for bonds to be broken. Increasing the concentration of reactants increases the number of collisions, and the reaction If the heat of reaction, AH, is negative, the energy of the products is higher than the energy of the The energy of a collision between atoms or molecule's must be greater than or equal to the L goes faster reactants and the reaction is endothermic The activation energy, Ea, of the forward reaction is the difference between the energy of the products and the energy of the transition state. the temperature decreases the kinetic energy of the reactants, and the reaction goes more slowly.

Explanation / Answer

Ans : The reaction has reactants and products and the formation of products depends on the concentration of reactants and the activation energy.

The true statements are :

Reactants must collide , with proper orientation and with energy greater than or equal to the activation energy for a reaction to occur.

The energy of a collision between atoms or molecules must be greater than or equal to the activation energy, Ea for bonds to be broken.

Increasing the concentration of reactants increases the number of collisions , and the reaction goes faster.

Decreasing the temperature decreases the kinetic energy of the reactants , and the reaction goes more slowly.

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