Photochemical Smog

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Chemistry Assignment
Name : Lorna Ng Xin Mei
Student ID : 1000620
Group Members’ Name: Sim Koshin Chen Chui Ting Bhindia Pooja Rayel
Title : Paper Chromatography
Photochemical Smog
Lecturer’s Name : Ms. Usha Nanthini

Table of Content No. | Content | page | 1. | Paper Chromatography | | | 1.1 Definition | | | 1.2 Background | | | 1.3 Rf Values | | | 1.4 Principles of Paper Chromatography | | | 1.5 Procedure of Paper Chromatography | | | 1.6 Uses of Paper Chromatography | | | 1.7 Application of Paper Chromatography | | 2. | Photochemical Smog | | | 2.1 Definition | | | 2.2 Causes of Photochemical Smog Formation | | | 2.3 Chemistry of Photochemical Smog Photochemical Smog | | | 2.4 Effects of Photochemical Smog | | | 2.5 Solutions | | 3. | Appendix | | 4. | References | | | | |

Paper Chromatography 1.1 Definition
Paper chromatography is an analytical chemistry technique for separating and identifying mixtures from complex mixtures into their individual components. 1.2 Background
Chromatography is used to separate mixtures of substances into their components. All forms of chromatography work on the same principle. They all have a stationary phase (a solid, or a liquid supported on a solid) and a mobile phase (a liquid or a gas). The mobile phase flows through the stationary phase and carries the components of the mixture with it. Different components travel at different rates, depending on the differences in solubility in the solvent, and differences in the attraction to both of the phases. In paper chromatography, the stationary phase is a very uniform absorbent paper. The mobile phase is a suitable liquid solvent or mixture of solvents.
1.3 Rf Values
Some compounds in a mixture travel almost as far as the solvent does; some stay much closer to the base line. The distance travelled relative to the solvent

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