The odors of sewage are mainly due to the products of the reduction anaerobic of organic compounds containing nitrogen and sulfur. Hydrogen sulfide (H2S) is an important component of sewage odors, but none of them way is the only producer of odors, since powerful odors can be perceived in its absence. Oxidation in air can be used to eliminate odors, but chlorine is the preferred treatment because it not only destroys H2S, and other odorous compounds, but also it also inhibits the bacteria that produce those compounds. As a specific example, hypochlorous acid (HCIO) reacts with H2S in Low pH as follows: ???? + ?2? → ? + ??? + ?2? If in actual practice an excess of 100% HClO is used (in order to ensure destruction total H2S, in view of the fact that HClO also reacts with other substances), a) What volume of dissolution at 5% by weight of HCIO should be added to 1 L of
The odors of sewage are mainly due to the products of the reduction
anaerobic of organic compounds containing nitrogen and sulfur. Hydrogen sulfide (H2S) is an important component of sewage odors, but none of them way is the only producer of odors, since powerful odors can be perceived in its absence. Oxidation in air can be used to eliminate odors, but chlorine is the preferred treatment because it not only destroys H2S, and other odorous compounds, but also it also inhibits the bacteria that produce those compounds.
As a specific example, hypochlorous acid (HCIO) reacts with H2S in
Low pH as follows:
???? + ?2? → ? + ??? + ?2?
If in actual practice an excess of 100% HClO is used (in order to ensure destruction total H2S, in view of the fact that HClO also reacts with other substances),
a) What volume of dissolution at 5% by weight of HCIO should be added to 1 L of a aqueous solution containing 50 ppm of H2S, in milliliters (mL)?
Note: Consider the density of the solution at 5% HClO equal to that of water.
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