Chemistry lab 6 - Ng Choo Wen(Joven 11th October 2016...

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Ng Choo Wen (Joven) 11 th October 2016 15024599 Chemistry & Society Lab Report: Experiment 6 Title: Oxidation – Reduction Reactions Aim: To investigate the evidence of the oxidation dependent upon oxygen as well as several oxidizing and reducing agents at work. Procedure: A. Oxidation Oxidation in The Body a) Test for carbon dioxide was tested by exhaling through a drinking straw into a test tube containing some clear limewater. The result was recorded. b) The equation for the reaction involved in the test was wrote for the presence of carbon dioxide. c) The result of breathing against a beaker was recorded. B. Applications of Oxidizing and Reducing Agents 1. Bleaching i. Sulfurous Acid a. 1 mL of 10% sulfurous acid (H 2 SO 3 ) was added into one of the tubes containing a piece of apple peel. The apple peel was removed after 5 minutes and rinsed well with water. The result was recorded. ii. Potassium Chlorate 1 ml of saturated solution of potassium chlorate (KClO 3 ) was added into the second tube containing a piece of apple peel.
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