Table of Contents
- 1 Why is 1 time a measure of the rate of reaction?
- 2 What will happen to the reaction time and reaction rate if the concentration of one of the reactants is doubled while keeping everything the same?
- 3 How does concentration affect the time of reaction?
- 4 What is the difference between reaction time and reaction rate?
- 5 Why does reaction rate decrease with time?
- 6 Why does a reaction slow down with time?
- 7 What is the relationship between the time it takes for a reaction to occur and the reaction rate?
- 8 Why does reaction rate decrease over time?
- 9 What are the reactions between halide ions and sulphuric acid?
- 10 How is the concentration of H2SO4 related to the rate of reaction?
Why is 1 time a measure of the rate of reaction?
The time it takes for the sulfur produced to obscure the cross is then measured. The faster the cross is covered (shorter time taken), the faster the rate of production of sulfur. Hence the rate of reaction is proportional to 1/time.
What will happen to the reaction time and reaction rate if the concentration of one of the reactants is doubled while keeping everything the same?
When you double the concentration the rate doubles. The rate is proportional to the square of the concentration of a reactant. The rate is not affected by the concentration of a reactant. When you double the concentration the rate stays exactly the same.
How does concentration affect the time of reaction?
Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
What will happen to the reaction rate if the concentration of A is halved?
If you halve the concentration, you halve the rate, and so on. The rate is proportional to the square of the concentration. If you double the concentration, you multiply the rate by four.
Why does rate of reaction decrease with time?
Typically, reaction rates decrease with time because reactant concentrations decrease as reactants are converted to products. Reaction rates generally increase when reactant concentrations are increased.
What is the difference between reaction time and reaction rate?
What is the difference between Reaction Rate and Reaction Time? Reaction rate determines how fast or how slow the reaction is. Reaction time is the time taken to complete a reaction to a certain extent. If the reaction rate is high for a particular reaction, then the reaction time is low.
Why does reaction rate decrease with time?
Why does a reaction slow down with time?
Reactions usually slow down as time goes on because of the depletion of the reactants. The rate constant, or the specific rate constant, is the proportionality constant in the equation that expresses the relationship between the rate of a chemical reaction and the concentrations of the reacting substances.
Why does the rate of reaction goes on decreasing with time?
Why do reactions take time?
Chemical reactions require varying lengths of time for completion, depending upon the characteristics of the reactants and products and the conditions under which the reaction is taking place. Powders react faster than blocks – greater surface area and since the reaction occurs at the surface we get a faster rate.
What is the relationship between the time it takes for a reaction to occur and the reaction rate?
The rate of a reaction, or stage in a reaction, is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time.
Why does reaction rate decrease over time?
What are the reactions between halide ions and sulphuric acid?
THE REDOX REACTIONS BETWEEN HALIDE IONS AND CONCENTRATED SULPHURIC ACID This page describes and explains the redox reactions involving halide ions and concentrated sulphuric acid. It uses these reactions to discuss the trend in reducing ability of the ions as you go from fluoride to chloride to bromide to iodide.
Why is sulfuric acid used in the esterification reaction?
Concentrated sulfuric acid can be used for this purpose because it reacts rapidly with water to form a hydrated form of sulfuric acid, effectively removing the water from the reaction mixture (5) . The esterification reaction is quite slow. Heating the reaction mixture will speed up the rate of reaction .
How does concentrated sulphuric acid work as an acid?
Concentrated sulphuric acid acting as an acid. The concentrated sulphuric acid gives a hydrogen ion to the halide ion to produce a hydrogen halide. Because this is a gas, it immediately escapes from the system. If the hydrogen halide is exposed to moist air, you see it as steamy fumes.
Thus, the concentration of sulphuric acid (H2SO4) is also directly proportional to the rate of reaction, whereby, as the concentration decreases, the rate of reaction also decreases. Since the Magnesium ribbon is in excess, only the sulfuric acid can be allowed to change.