Meeting 3
Discussion over the phone (24 Feb)
We decided to split the work into two parts
- Polar – Jiehui, Haikal and Jeremy
- Non Polar – Jacob, Pratyum & Shantanu
After reading on the topic that we are assigned, we will come back and discuss together as a team. Eg. Through posting in the blog or email. After discussion, then we will key into the blog under chemical concept tab.
Polar interactions
To answer this, we must first define what a solvent is and how do reactants dissolve in a solvent. A solvent is liquid that acts a medium for reactions to occur. There are 2 types of solvents. They are polar and non-polar solvents.
Polar solvents are when the molecules have dipole moments. The bonds between the atoms have different electronegativity, resulting in a net dipole moment. To determine whether the molecules have dipole moment, it is important to look at the shape of the molecule and the bond angles.
A polar solvent will generally dissolve a polar molecule due to the charges to break up the molecule into ions and the positive charge of the polar molecule will attract the negative ion and vice versa as seen below when NaCl dissolves in H2O. H20 is an example of a polar molecule due to it having a slightly bent shape, the dipole moments do not cancel out resulting in a partially positive H and a partially negative O.
(source: http://chem.wisc.edu/deptfiles/genchem/sstutorial/Text7/Tx75/tx75.html)