What is profile of a reaction?

A reaction profile shows how the energy of the reactants and products changes during a reaction. It includes the activation energy , the minimum energy needed for a reaction to start. starts at the energy of the reactants.

What is reaction profile diagram?

A reaction profile is a diagram showing the change in chemical potential energy, referred to as the energy pathway, as a chemical reaction proceeds from reactants to product. The enthalpy change is calculated from the difference in enthalpy between the enthalpy of the products (Hp) and the reactants (Hr).

What is a reaction profile GCSE?

A reaction profile includes the activation energy , which is the minimum energy needed by particles when they collide for a reaction to occur. The activation energy is shown as a ‘hump’ in the line, which: starts at the energy of the reactants.

What are two examples of exothermic?

Here are some of the examples of exothermic reaction:

• Making of an ice cube. Making ice cube is a process of liquid changing its state to solid.
• Snow formation in clouds.
• Burning of a candle.
• Rusting of iron.
• Burning of sugar.
• Formation of ion pairs.
• Reaction of Strong acid and Water.
• Water and calcium chloride.

What are two conditions that must be met in order for a chemical reaction to take place?

Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation. A collision that meets these two criteria, and that results in a chemical reaction, is known as a successful collision or an effective collision.

What are three requirements for a reaction to proceed?

Three things must happen for a reaction to occur.

• Molecules must collide.
• Molecules must collide with enough energy to begin to break the old bonds so new bonds can form. ( Remember activation energy)
• Molecules must collide with the correct orientation.

What are 3 exothermic reactions?

Examples of Exothermic Reactions

• any combustion reaction.
• a neutralization reaction.
• rusting of iron (rust steel wool with vinegar)
• the thermite reaction.
• reaction between water and calcium chloride.
• reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
• reaction between potassium permanganate and glycerol.