Message for Chemist

The essence of chemistry is NOT JUST to discover
The essence of chemistry is to create
The book of chemistry has to be written
The core of chemistry has to be composed
Chemistry is creative power
Chemistry, Promethean science - the light of the future
BUT not only the light of future, ALSO the art of matter

Prof. Jean-Marie Lehn, Nobel Prize in Chemistry 1987
IYC 2011 official launching
27 January 2011

Saturday, June 01, 2013

The Free Energy and the Chemical Equilibrium: Combining the Laws of Thermodynamics

In this section, we will build up our concepts about the 3 laws of thermodynamics (the 1st, 2nd, and the 3rd laws of thermodynamics) to bring the concept of spontaneity of reactions based on new parameter which is the free energy. In this section, there are 2 types of free energy which are the Helmholtz and Gibbs free energies, and we will have a deeper discussion in Gibbs free energy because it is used more common in chemistry. Furthermore, we will see briefly how the free energy is related to the equilibrium process.
Hermann Ludwig Ferdinand von Helmholtz (left) and Josiah Willard Gibbs (right)
The founders of the concept of free energies

Monday, May 27, 2013

Entropy: The 2nd and 3rd Laws of Thermodynamics

In this section, we will have a discussion about the origin of spontaneity of process by looking some of the thermodynamics properties, one of it is entropy. Besides that, we will also see the thermodynamics laws that become the foundations of the concept of entropy which are the 2nd and 3rd laws of thermodynamics. Furthermore, we will see one of the application of the 2nd law of thermodynamics in Carnot engine.
An idealised (impossible) engine


Wednesday, May 22, 2013

The Chemistry of d- and f- Block: Trends in Stability Constant and The Application of Complex Chemistry

In this section, we will see the trends in stability constant where the ligands and the metal ions are changed. We will see some patterns that build up this concept about the trends and end up in hard and soft acid base theory. Lastly, in this section we will see how complex chemistry is used in our daily life.

Tuesday, May 21, 2013

The Chemistry of d- and f- Block: The Chelate Effect

In this section, we will build up one of the concept of the trend in stability constant where changing the ligands into chelating agent has effect on the stability constant. A chelating agent or a chelate can be defined as polydentate ligand where it has more than 1 attachment point of ligand-metal ion. In this section, we will also see the origin and the physical interpretation of the chelate effect.
[M(EDTA)](n-4)+ complex, the chelate effect

Saturday, May 18, 2013

The Chemistry of d- and f- Block: Complex Synthesis and Stability Constant

In this section, we will have a discussion how to make a complex compound through some common methods or reactions such as substitution or redox reaction. Besides that, we will also see some thermodynamics and kinetics aspect in complexation reaction, one of the thermodynamics parameter which will be discussed is the stability constant, K. Lastly, we will also see the pattern of K in complexation reaction with some abnormal cases.

Wednesday, May 15, 2013

The Chemistry of d- and f- Block: Thermodynamics Consequences of CFSE

In this section, we will build up again the concept of CFSE as we will look the consequences over CFSE into some observable values, such as hydration enthalpy of M2+ and ionic radius of M2+ ions. Besides that, we can also determine from the value of Δo from hydration enthalpy. In this section also, we will look how CFSE could be used to predict the geometry of coordinated complex to be a tetrahedral or a octahedral complex.

Tuesday, May 14, 2013

The Chemistry of d- and f- Block: The Absorption Spectrum of Complex Compounds

In this section, we will have a discussion for one of the consequences of crystal splitting (CFSE) stabilisation energy which is observed in a spectrum. In this section, we will explain some unique characteristics of complex compound's absorption spectrum. Furthermore, we will also see Jahn-Teller distortion which gives the unique pattern of absorption spectrum of a complex compound.

Tuesday, May 07, 2013

Radicals and Us II: Radicals and Our Life

In this section, we will continue our discussion in radicals and we will discuss about the radicals in our life. In this case, we will see how radicals play prominent roles in antioxidant and immune system of body, and also in the atmosphere as it affects the climate of the Earth.