TRAVISTRA

CHROMATOGRAPHY  It is a method used for the separation, purification, and identification of a mixture of substances. It is useful when components of a mixture have similar physical and chemical properties and hence cannot be separated by other methods. Principle: It is based on the distribution of the components in a mixture between a stationary and a mobile phase. The stationary phase may be a column of adsorbent, a paper, a thin layer of adsorbent through which the mobile phase moves on. The mobile phase may be a liquid or gas. The principle of chromatographic separation is always adsorption (absorption of a constituent on the surface of the solid stationary phase) or partition (distribution of a constituent in between two liquid stationary phases). THEORY OF CHROMATOGRAPHY The separation takes place due to the differential migration of components which depends on the relative affinity towards the stationary and mobile phases.  The component which is less strongly held by th...

BEER LAMBERTS LAW   When a beam of monochromatic EM radiation is passed through an Absorbing solution of concentration (c), the rate of decrease in intensity(-dI) of radiation with a thickness of the solution (dx) is proportional to the intensity of the radiation (I) and concentration (c) of the solution. -dI/dx ∝ Ic  -dI/dx = kIc  -dI/I =kcdx Beer Lambert's law gives the linear relationship between the absorbance of EM radiation and the concentration of an absorber. A = εcL A is the absorbance c is the concentration L is the path length Ε is the molar extinction coefficient

 CONVERGING THINKING AND DIVERGING THINKING  Convergent thinking focuses on finding one well-defined solution to a problem. Divergent thinking is the opposite of convergent thinking and involves more creativity CONVERGING THINKING This type of thinking is best suited for tasks that involve logic as opposed to creativity, such as answering multiple-choice tests or solving a problem where you know there are no other possible solutions.  DIVERGING THINKING Divergent thinking is the opposite of convergent thinking and involves more creativity. With this type of thinking, you can generate ideas and develop multiple solutions to a problem. While divergent thinking often involves brainstorming for many possible answers to a question, the goal is the same as convergent thinking—to arrive at the best solution.  BENEFITS IN CONVERGING THINKING A quicker way to arrive at a solution Leaves no room for ambiguity Encourages organization and linear processes BENEFITS IN DIVERGING T...