Final exam review_II

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur. It is often denoted as Ea and is a key factor in determining the rate of a reaction.

Front

How does temperature affect the rate constant of a reaction?

Back

As temperature increases, the rate constant (k) generally increases due to more particles having sufficient energy to overcome the activation energy barrier.

Front

What is the Arrhenius equation?

Back

Front

What is the Collision Model in chemistry?

Back

The Collision Model states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

What is the significance of the -OH group in alcohols?

Back

The -OH group (hydroxyl group) is responsible for the chemical properties and reactions of alcohols, including their ability to form hydrogen bonds.

Front

Back

Front

What is a ketone?

Back

A ketone is an organic compound characterized by a carbonyl group (C=O) bonded to two other carbon atoms. It has the general formula R1C(=O)R2.

Front

What is the difference between aldehydes and ketones?

Back

Aldehydes have a carbonyl group at the end of a carbon chain, while ketones have a carbonyl group within the carbon chain.

Front

What is the role of the gas constant (R) in the Arrhenius equation?

Back

The gas constant (R) is used to relate the energy units in the Arrhenius equation, typically expressed in J/(mol·K). Its value is approximately 8.314 J/(mol·K).

Front

What is the relationship between reaction rate and concentration of reactants?

Back

Generally, an increase in the concentration of reactants leads to an increase in the reaction rate, as there are more particles available to collide.