Is the following reaction oxidation reaction or reduction?............ H2S + Cl2 gives S + Cl-
Answers
Explanation:
By chemical oxidation and reduction, the oxidation state of the substance is changed. Oxidation is a process in which the oxidation state is increased, while chemical reduction is a process in which the oxidation state is decreased. The concept of oxidation stage is based on the following rules: (1) all elements have an oxidation state of zero, (2) all ions have the same oxidation state as their charges, (3) hydrogen has the oxidation state +1 in all its compounds, (4) oxygen has the oxidation state –2 in all its compounds, except hydrogen peroxide and its derivatives, and (5) the sum of the oxidation stages of all atoms in an uncharged molecule is zero. Nernst's equation expresses the relationship between the electrode potential and concentration of species. The reaction rate of an oxidation–reduction (redox) process is affected by concentration of reactants, temperature, catalysts, pH, and the nature of the reactions. Phenols, aldehydes, thio-organic compounds, and aromatic amines all show high activity, while halogenated hydrocarbons, saturated aliphatic compounds, and benzenes all have low reactivity. Oxygen has its significance in biological oxidation, but it also plays an important role in chemical oxidation. Ozone is a more powerful oxidant than oxygen and is able to react rapidly with a wide spectrum of organic compounds and micro-organisms present in wastewater. Permanganate is a powerful oxidizing agent and is widely used by many municipal water plants for taste and odor control and for the removal of iron and manganese.
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