Basic-Gyan

As per the general definition ,the rate of chemical reaction is defined as a speed with which a reactant is converted into product or a speed at which a reaction takes place. The rate of reaction is generally seen to be influenced by the composition of the reactant molecules and the energy of the reactant molecules (Energy generally means temperature).  Types Of Reaction Rate The rate of reaction is divided into two ways: a) Instantaneous reaction rate b) Average reaction rate AVERAGE REACTION RATE Average reaction rate is similar to the reaction rate which is defined for the entire time interval. Let us consider a reaction to understand more clearly the average reaction rate;                      A ➞ B       at t=0,  only A present [A]       at t=t₁, both A and B present [A]₁&[B]₁        at t=t₂, Both A and B present [A]₂&[B]₂ Now, The rate of disappearance of r...

As per the general definition, the rate of chemical reaction is defined as a speed with which a reactant is converted into product or a speed at which a reaction takes place.  Thus, we can say that when a reaction is takes place, then the concentration of reactant decreases with time while the concentration of the product increases with time and after the completion of the reaction, the whole reactant is converted into product. ......." The Rate Of A Chemical Reaction Is The Change In The Concentrations Of Reactants Or Products In A Given Time Interval"..... ... Average Rate Law Vs Instantaneous Rate Law????  When we define the rate of change in the concentration of a reactant over a time interval, the reaction rate is known as the average rate of that reaction. Whereas, when we define the rate of change in the concentration of a reactant at a particular time, the reaction rate is known as the instantaneous rate of that reaction. A ➞ B ➩ r avg = - ∆[A] / ∆t =∆[B] / ∆t  I...

......." A reaction is defined as a process in which a substance is converted into a new substance with changing their physical as well as chemical properties "........ A chemical reaction essentially involves products and reactants. In addition, certain critical conditions are required for the chemical reaction to proceed until its completion. These conditions include proper temperature and pressure, ionic strength, etc. However, every chemical reaction can be explained using two terms: " Rate Of Reaction And Rate Constant ". Let's have a look a chemical reaction, A + B ➞ C + D                   ––––––––(1) Here,  A and B are reactants and C and D are   products. The rate law for this reaction is written as; ➩ { r = k[A]ⁿ [B]ᵐ......... }                        –––––––––(2)   Where,  k = Represent the " Rate Constant " or   a proportionality constant ...

A reaction is defined as a process in which a substance is converted into a new substance with changing their physical as well as chemical properties. And how fast a reactant converts to a product is nothing but the rate at which the reaction proceeds.  Every chemical reaction proceeds at different reaction's rate.   Some reaction occurs very fast like the combustion of match sticks, on the other hand, some reaction occurs very slow like rusting of iron in presence of air and moisture. So, we can say that different reactions take place at different speeds. To understand how the reaction is going to proceed, we determine the term " Rate Of The Reaction ".  Let us understand more about the rate of reaction.   But before that you should be aware of one term, which is Rate Law . Let us now understand what it is? An equation which shows a relationship between a ' Rate Of Reaction ' and ' The Concentration Of It's Reactants ' is called " Rate Law "...

As we discuss in the previous, a reaction is defined as;   " The process in which a substance changes into a new substance by changing its physical and chemical properties is called a reaction ".  A chemical reaction essentially involves products and reactants.  In addition, certain critical conditions are required for the chemical reaction to proceed until its completion. These conditions include proper temperature and pressure, ionic strength, etc.  However, every chemical reaction can be explained using two terms: " Rate Of Reaction " & " Rate Constant ".  The rate of reaction describes the rate at which the reaction proceeds and rate constant quantifies the rate of a reaction.   The rate law is a relation that relates the rate of a reaction with the reaction rate constant and the concentration of the reacting species.   The rate of reaction can be defined in terms of the amount of the reactants consumed and products formed in a unit of time. Ev...

A catalyst is any substance (or material), when it is added in the reaction then due to their presence in the reaction, the speed of the reaction is altered. And this reaction in which a catalyst is present, is called as " catalytic reaction ". This phenomena is called " Catalysis ". Thus, these substances can increase or decrease the rate of chemical reaction and negative catalyst is a type of catalyst which decreases the rate of chemical reaction. Negative Catalysts The catalyst which reduces the rate of reaction by increasing the activation energy, is called ' Negative catalysts ' and this phenomena is called as " Negative catalysis ". Remember if we increased the activation energy then the path through which a reactant is converted into product, also increases. And thus, the rate of reaction decreases. Let's have a look some examples related to negative catalysts; ➤ Phosphoric acid as negative catalysts in the definition of hydrogen peroxid...

A catalyst is any substance (or material), when it is added in the reaction then due to their presence in the reaction, the speed of the reaction is altered. And this reaction in which a catalyst is present, is called as " Catalytic Reaction ". This phenomena is called " Catalysis ". Thus, these substances can increase or decrease the rate of chemical reaction and positive catalyst is a type of catalyst which increases the rate of chemical reaction. Positive Catalysts the catalyst that reduces the activation energy by providing lower path and increases the rate of a reaction is known as " Positive Catalyst " and this phenomenon is known as " Positive Catalysis ". Remember that if we reduced the activation energy then the path through which a reactant is converted into product, also decreases.  Let's have a look some examples related to positive catalysts; ➤Haber process in which iron oxide used as a positive catalyst for the production of Amm...