Extended Essay Chemistry Lokesh Chandnani 049369 0003
EXTENDED ESSAY: CHEMISTRY
What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic, diamagnetic and paramagnetic nature like Cobalt, Nickel, Copper and Manganese in their chloride compounds when performed in an agar medium?
Lokesh Chandnani
Candidate Number – 049369 – 0003
Supervisor: Mr. Jaydip Chaudhuri
The Aga Khan Academy, Hyderabad
Session: May 2015
Word Count: 3798
1. Abstract
Liesegang rings phenomena is a special type of formation that occurs in gels. Crystal growth in gels and helical patterns are affected by various factors. Most of the elements in the d-block (transition metals) show the property of periodic precipitation also magnetic property. Thus, change in the conditions for crystal growth was an interesting area of study. The investigation aimed to research upon the following question: “What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic, diamagnetic and paramagnetic nature like Cobalt, Nickel, Copper and Manganese in their chloride compounds when performed in an agar medium?”
An experiment was conducted in which strength of magnetic field was the independent variable. The strength was not measured but was varied by providing current from 0A – 0.5A. The dependent variable being crystal growth, helical pattern and liesegang ring formation which includes number of rings and the spacing. Samples of salt complexes of cobalt, zinc, copper and manganese were prepared in agar medium forming a gel and then were left to react with ammonia (ligand) for a period of four days and the data was recorded.
After analyzing the data in Logger Pro Software and plotting the graph of the dependent variables and the change observed, it was concluded that the crystal growth is affected by magnetic field due to their crystal structures and their magnetic property. Hexagonal crystal structures (Cobalt)
What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic, diamagnetic and paramagnetic nature like Cobalt, Nickel, Copper and Manganese in their chloride compounds when performed in an agar medium?
Lokesh Chandnani
Candidate Number – 049369 – 0003
Supervisor: Mr. Jaydip Chaudhuri
The Aga Khan Academy, Hyderabad
Session: May 2015
Word Count: 3798
1. Abstract
Liesegang rings phenomena is a special type of formation that occurs in gels. Crystal growth in gels and helical patterns are affected by various factors. Most of the elements in the d-block (transition metals) show the property of periodic precipitation also magnetic property. Thus, change in the conditions for crystal growth was an interesting area of study. The investigation aimed to research upon the following question: “What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic, diamagnetic and paramagnetic nature like Cobalt, Nickel, Copper and Manganese in their chloride compounds when performed in an agar medium?”
An experiment was conducted in which strength of magnetic field was the independent variable. The strength was not measured but was varied by providing current from 0A – 0.5A. The dependent variable being crystal growth, helical pattern and liesegang ring formation which includes number of rings and the spacing. Samples of salt complexes of cobalt, zinc, copper and manganese were prepared in agar medium forming a gel and then were left to react with ammonia (ligand) for a period of four days and the data was recorded.
After analyzing the data in Logger Pro Software and plotting the graph of the dependent variables and the change observed, it was concluded that the crystal growth is affected by magnetic field due to their crystal structures and their magnetic property. Hexagonal crystal structures (Cobalt)
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