Arrhenius Equation : Understanding It

The video tutorial explains the relationship between reaction rate and temperature, highlighting that the rate of reaction doubles with every 10° rise in temperature. It introduces the Arrhenius equation, which connects the rate constant with activation energy and temperature, based on collision theory. The components of the equation, including the rate constant, pre-exponential factor, and gas constant, are detailed. The tutorial also discusses how increased temperature provides thermal energy, enhancing kinetic energy and enabling more molecules to surpass the activation energy, thus increasing the reaction rate.

What happens to the rate of reaction when the temperature increases by 10°?

• It triples.

• It doubles.

• It remains the same.

• It halves.

Who first studied the influence of temperature on reaction rates?

• Isaac Newton

• Marie Curie

• Albert Einstein

• Schmandt Arrhenius

According to collision theory, what is necessary for a reaction to occur?

• Reactant molecules must collide with sufficient energy and proper orientation.

• Reactant molecules must be stationary.

• Reactant molecules must be at absolute zero temperature.

• Reactant molecules must be in a gaseous state.

In the Arrhenius equation, what does the pre-exponential factor (A) represent?

• The frequency factor

• The gas constant

• The activation energy

• The rate constant

What effect does increasing temperature have on the fraction of molecules with energy greater than the activation energy?

• It decreases the fraction.

• It has no effect.

• It increases the fraction.

• It makes the fraction zero.