Rate of reaction

Created by

Kai Porter

Cards (13)

Factors Affecting Rate of Reaction 
Change in concentration of reactants, temperature, surface area, addition of a catalyst, and pressure can all affect the rate of reaction.
Definition of Rate of Reaction 
The rate of reaction is the speed at which a chemical reaction occurs, measured in moles per unit time. It is calculated by measuring the change in concentration of reactants or products over a specific time interval.
What are the typical reactants used in a gas production rate experiment? 
Metal (e.g., magnesium ribbon) and an acid (e.g., hydrochloric acid)
What equipment is needed for a gas production rate experiment?
A conical flask, delivery tube, gas collection apparatus, and a stopwatch
What is the purpose of using an gas syringe in the experiment?
To collect the gas produced and measure its volume accurately
How is the volume of gas measured during the experiment? 
By reading the volume of gas that displaces water in the inverted measuring cylinder
What should you do to measure gas production at regular time intervals? 
Record the volume of gas produced every 10 seconds using a stopwatch
How can you vary the concentration of hydrochloric acid in the experiment? 
By using different concentrations such as 0.1M, 0.5M, and 1M HCl
What does a steeper slope on the volume vs. time graph indicate? 
A faster reaction rate
How does collision theory explain the increased rate of reaction with magnesium powder? 
The increased surface area of the powder allows for more frequent collisions between reactant particles
What is the relationship between concentration and reaction rate based on the experiment? 
Higher concentration leads to a faster reaction rate due to more particles available to collide
Endothermic Reaction 
A chemical reaction that absorbs energy from its surroundings, resulting in a decrease in temperature.
Exothermic Reaction 
A chemical reaction that releases energy to its surroundings, resulting in an increase in temperature.