What is meant by rate of a chemical reaction write its unit?

Reaction rates are usually expressed as the concentration of reactant consumed or the concentration of product formed per unit time. The units are thus moles per liter per unit time, written as M/s, M/min, or M/h.

What is rate of reaction Toppr?

The speed or rate of a chemical reaction is the change in concentration of a reactant or product per unit time. To be specific, it can be expressed in terms of: the rate of decrease in concentration of any of the reactants. the rate of increase in the concentration of any of the products.

What is meant by the rate of reaction quizlet?

The rate of a reaction definition: The rate of reaction is the rate of change of concentration of a reactant or product with time.

What is the meaning of rate in physics?

In physics, rate means rate of change. Basically, how much a certain quantity changes with respect to another quantity that is also changing. You may also sometimes hear the term gradient which describes the same thing. And mathematically, it is also a ratio, say for example.

What is Rate Law in Chemistry 12?

Class 12 Chemistry Chemical Kinetics. Rate law. Rate law. The representation of rate of reaction in terms of molar concentration of the reactants participating in a reaction raised to some power is called rate law. It is also called rate expression or rate equation.

How do you describe the rate of reaction from a graph?

The rate of reaction can be analysed by plotting a graph of mass or volume of product formed against time. The graph shows this for two reactions. The gradient of the line is equal to the rate of reaction: the steeper the line, the greater the rate of reaction.

What are the 4 factors that affect the rate of reaction?

The factors that affect reaction rates are:

• surface area of a solid reactant.
• concentration or pressure of a reactant.
• temperature.
• nature of the reactants.
• presence/absence of a catalyst.

What determines the rate of reaction quizlet?

The higher the concentration of reactants, the faster the rate of a reaction will be. By decreasing the particle size of a reactant, we are increasing its surface area. The greater the surface area, the higher the chance of collisions, thus the faster the rate of reaction.

What do you mean by rate?

Definition of rate (Entry 1 of 3) 1a : a quantity, amount, or degree of something measured per unit of something else her typing rate was 80 words per minute. b : an amount of payment or charge based on another amount specifically : the amount of premium per unit of insurance.

How do you explain rates?

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. This is not a ratio of two like units, such as shirts. This is a ratio of two unlike units: cents and ounces.

What does a rate of reaction tell us?

The rate of a reaction is a measure of how quickly a reactant is used up, or a product is formed. A collision that produces a reaction is called a successful collision. The activation energy is the minimum amount of energy needed for a collision to be successful.

What are the methods is used to determine the rate of reaction?

Measuring Reaction Rates Reaction Rate. The rate of a reaction is usually observed by watching the disappearance of a reactant or the appearance of a product within a given time period. Measuring Reaction Rate. Reactions That Produce Gases Such as Oxygen or Carbon Dioxide. Precipitation Reactions.

How to calculate the rate of reaction?

Reaction rate is calculated using the formula rate = Δ[C]/Δt,where Δ[C]is the change in product concentration during time period Δt.

How do you calculate the average rate of reaction?

Average rate of a reaction is defined as the rate of change of concentration per unit time. It is calculated by dividing the total change in concentration of any one of the reactant or product by the total time taken to do so. Thus, mathematically.