[Needaask]

Even though the concentration of the reactants decrease, doesn't the temperature of the reactants increase as well? So isn't it possible for the rate of reaction to increase for a while before the concentration to decrease so much that the additional heat can't increase the rate of reaction and then it drops?

[curiouscat]

Even though the concentration of the reactants decrease, doesn't the temperature of the reactants increase as well?

Not always. Not all reactions are exothermic. Often not even adiabatic.

So isn't it possible for the rate of reaction to increase for a while before the concentration to decrease so much that the additional heat can't increase the rate of reaction and then it drops?

Sure. It is possible.

OTOH, most kinetic data is isothermal not adiabatic.

[Needaask]

Even though the concentration of the reactants decrease, doesn't the temperature of the reactants increase as well?

Not always. Not all reactions are exothermic. Often not even adiabatic.

So isn't it possible for the rate of reaction to increase for a while before the concentration to decrease so much that the additional heat can't increase the rate of reaction and then it drops?

Sure. It is possible.

OTOH, most kinetic data is isothermal not adiabatic.

Oh that's right. That case would only apply to exothermic reactions.

In most cases the temperature of both the reactants(system) and the atmospher (surrounding) is constant, so would that mean the heat produced in the exothermic reaction doesn't increase the kinetic energy of the reactants?

Thanks for the help

[curiouscat]

In most cases the temperature of both the reactants(system) and the atmospher (surrounding) is constant, so would that mean the heat produced in the exothermic reaction doesn't increase the kinetic energy of the reactants?

If your reactor remains isothermal it means whatever heat of reaction was evolved (if any) was removed from the reactor walls by conduction or radiation.

[Needaask]

In most cases the temperature of both the reactants(system) and the atmospher (surrounding) is constant, so would that mean the heat produced in the exothermic reaction doesn't increase the kinetic energy of the reactants?

If your reactor remains isothermal it means whatever heat of reaction was evolved (if any) was removed from the reactor walls by conduction or radiation.

Oh is that why usually the concentration decreasing factor is the only one being addressed. So in my book and most example where I assume they are isothermal, the reaction rate decreases with time?