Best Books for IIT JEE 2017 Dear friends, as we all know that getting into an IIT is not an easy task. It requires full dedication, focus and determination to qualify both JEE Main and Advanced entrance exams. To prepare for highly competitive exams, the candidate not only needs to be determined and confident, but […]
Best Books for NEET 2017 For the effective and result oriented preparation of NEET 2017, students must make a note of all the necessary exam details such as the exam pattern, curriculum, topic-wise distribution of marks and time duration. This will help you get an idea of the important concepts so you can aim your […]
NEET Exam Pattern 2017 Central Board of Secondary Education (CBSE), an exam conducting authority of NEET, has declared the exam pattern of NEET 2017. The candidates are advised to completely go through the exam pattern because it helps in understanding the nature of syllabus, number of questions and marking scheme etc. NEET 2017 is scheduled to […]
Osmotic pressure: It is the excess pressure applied to the solution to prevent osmosis. It depends upon the number of solute particles in a given volume of solution. In other words, osmotic pressure of a solution at constant temperature is directly proportional to its concentration (molarity). Therefore, osmotic pressure is another colligative property of solution.
We know that weak electrolytes do not ionize completely in an aqueous solution. Therefore, in the solution of weak electrolytes, a dynamic equilibrium exists between the undissociated molecules and the ions. The dissociation of weak electrolytes further gets decreased when a strong electrolyte containing a common ion is added to its solution. This effect is […]
The shape of a molecule plays an important role in determining its physical and chemical properties. The molecular shape is determined by the overlapping of orbitals. The VESPR theory explains the atomic orbital overlapping and predicts the shape of the molecules. The valence shell electron pair repulsion theory states: “The repulsion between electron pairs causes […]
Fischer projection represents the flat structure of a three dimensional molecule. In Fischer projection, asymmetric carbon is represented as the interaction point between horizontal and vertical bonds. Horizontal bonds are directed towards the observer and vertical bonds are directed away from the observer. The projection can also be written for molecules with more than one […]
Activation of Energy Activation of Energy is the minimum amount of additional external energy needed to convert a reactant into product. It is denoted by Ea. To know more about The valence Shell Electron Pair Repulsion Theory (The VSEPR Theory) click here