Author: Gk Scientist

Molecularity of Reaction

Molecularity of Reaction: The number of atoms, ions or molecules that must collide with one another simultaneously so as to result into a chemical reaction is called the molecularity of the reaction. It is a theoretical concept and does not convey anything about the mechanism of the reaction. Molecularity of reaction can be 1, 2, 3, …

Order of Reaction

Order of Reaction: The number of reactant molecules whose concentration actually determines the rate of reaction is called the order of reaction. In other words, the order of reaction is the sum of the powers to which concentration terms are raised in the rate law expression. Example- For a reaction, aA + bB + cC ———-> …

Rate Constant and Specific Rate Constant

Rate Constant and Specific Rate Constant: According to the law of mass action, the rate of reaction is directly proportional to the concentration of reactants raised to their stoichiometric co-efficient. For a general reaction, aA + bB ———-> Products Rate of reaction ∝ a b or Rate (dx/dt) = k a b Where and are the …

Rate of Chemical Reaction

What is Chemical Kinetics? Chemical Kinetics is a branch of physical chemistry, that deals with the rates of chemical reactions and the mechanism by which they occur. Rate of Chemical Reaction: It is defined as the change in concentration of any one of the reactants or products in a particular time interval. Consider a hypothetical reaction- …

Modes of Nutrition

Modes of Nutrition: Two modes of nutrition are recognized in organisms. These are autotrophic or photosynthetic and holotrophic or ingestive. (1) Autotrophic Nutrition- Green plants synthesise their organic food from CO2 and water in the presence of sunlight. The process is called photosynthesis and the mode of feeding is termed autotrophic nutrition. Being a characteristic of …

Sense and New Realism

Sense and New Realism: Sense Realism: Sense Realism has a dominant role to play in the field of education. It was the system of education which had the roots of all the principles of modern education. Munro writes, “The term itself is derived from the fundamental belief that knowledge comes primarily through sense. We can have …

Humanistic and Social Realism

Humanistic and Social Realism: Humanistic Realism: The study of Roman and Greek literature is necessary for attaining that aim. Humanistic Realism gave a dominant place to the old literature and considered it necessary for the personal, social and psychological development of man. Erasmus, Rabelais, and Milton are the chief exponents of the theory. Erasmus feels that …

Education and Values

Education and Values: Values relate to the aims of human life. For the achievement of the aims men frame certain notions and these notions are called values. W. H. Kilpatrick has written, “That out of man’s capacity for goal-seeking behaviour arise his wants and efforts and out of these come in consciously chosen end (goal) and …

Functions of Education in National Life

Functions of Education in National Life: Education has a very vital role in national life. The state has a very close and intimate relationship with its citizens. The rise and fall of nations depend upon the individuals. The progress of a nation is possible only when its citizens are dynamic, resourceful, enterprising and responsible. Without such …