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Post a LessonAnswered on 10 Apr Learn Redox Reactions
Sadika
Oxidation Numbers and Structures:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Formulas for Compounds:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Substances with Variable Oxidation States for Carbon and Nitrogen:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Role of Sulphur Dioxide, Hydrogen Peroxide, Ozone, and Nitric Acid as Oxidants:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Instability of AgF2 and Its Strong Oxidizing Property:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Formation of Compounds of Different Oxidation States in Redox Reactions:
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Answered on 10 Apr Learn Redox Reactions
Sadika
Use of Alcoholic Potassium Permanganate in the Manufacture of Benzoic Acid:
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Answered on 10 Apr Learn Redox Reactions
Sadika
When concentrated sulfuric acid (H2SO4H2SO4) is added to an inorganic mixture containing chloride (Cl−Cl−) ions, it reacts with the chloride ions to form hydrogen chloride (HClHCl) gas. This reaction occurs because sulfuric acid is a strong dehydrating agent and can liberate hydrogen chloride gas from chloride-containing compounds such as metal chlorides or hydrochloric acid. The reaction can be represented as follows:
2 HCl+H2SO4→Cl2+SO2+H2O2 HCl+H2SO4→Cl2+SO2+H2O
In this reaction, concentrated sulfuric acid removes water from the hydrochloric acid (2HCl2HCl) present in the mixture, producing chlorine gas (Cl2Cl2), sulfur dioxide gas (SO2SO2), and water (H2OH2O). Since chlorine gas is colorless, the resulting gas is also colorless.
On the other hand, when concentrated sulfuric acid is added to an inorganic mixture containing bromide (Br−Br−) ions, it reacts with the bromide ions to form bromine (Br2Br2) vapor. Bromine vapor is red-orange in color, which gives the characteristic red color observed in the reaction. The reaction between sulfuric acid and bromide ions can be represented as follows:
2 HBr+H2SO4→Br2+SO2+H2O2 HBr+H2SO4→Br2+SO2+H2O
In this reaction, concentrated sulfuric acid removes water from the hydrobromic acid (2HBr2HBr) present in the mixture, producing bromine vapor (Br2Br2), sulfur dioxide gas (SO2SO2), and water (H2OH2O). The red color of bromine vapor distinguishes it from the colorless hydrogen chloride gas formed in the reaction with chloride ions.
Answered on 10 Apr Learn Redox Reactions
Sadika
Fluorine as the Best Oxidant: Fluorine is the most electronegative element, which means it has a strong tendency to attract electrons towards itself. As a result, fluorine readily accepts electrons and undergoes reduction, making it an excellent oxidizing agent. Fluorine has the highest electron affinity and the lowest standard reduction potential among the halogens, making it the strongest oxidant in the group.
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Answered on 10 Apr Learn Redox Reactions
Sadika
Chlorine Purification of Water: Excess chlorine in drinking water is harmful to human health. Chlorine reacts with organic matter and forms disinfection by-products (DBPs) such as chloramines and trihalomethanes, which are carcinogenic. To remove excess chlorine, it is treated with sulphur dioxide (SO2SO2):
Cl2+SO2+H2O→HCl+H2SO4Cl2+SO2+H2O→HCl+H2SO4
In this reaction, chlorine (Cl2Cl2) is reduced to hydrochloric acid (HClHCl), while sulphur dioxide (SO2SO2) is oxidized to sulfuric acid (H2SO4H2SO4).
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