Home > Chemistry
Question: Experiment title: Halogen-halide reactions in aqueous solution. Objective
· To investigate the order of oxidizing ability of the halogen Cl2, Br2 and I2 in aqueous solution.
· To observe the reaction between the halogen-halide in aqueous solution
· To study the characteristic of Group 17.
· Formulate concepts of validation of data and experimental design.
Answer: The halogens have simple molecular structures consisting of diatomic covalent molecules (X2) held together by van der Waals’ forces. Down the group, the molecules become larger and the strength of intermolecular van der Waals’ forces increases as the number of electrons in the molecule increases. Hence, the boiling point of the halogens increases down the group from gaseous Cl2, through liquid Br2, to solid I2.
In this experiment, the observation of reaction taking place when each of the aqueous solutions with halide ion solutions, Cl-(aq), Br-(aq), and I-(aq) in turn will be taken note. To enable to recognize the halogen molecules present, the addition of hexane to the halogen-halide mixture is needed. When a halogen which can oxidizes most of the other halide ions will clearly...(short extract)
To download the full answer, please Sign in or Register then make a payment or submit 3 of your essays.
Details: Mark: 61% | Subject: Chemistry | Course: Chemistry | Level: A-Level | Year: Not applicable | Document type: Essay* | Words: 1132 | References: Yes | Date written: Not available | Date submitted: April 17, 2009 | Essay ID: 1428
