Grade upto college level Physical Chemistry
Bleaching of flowers by Cl2 is permanent, by SO2 it is temporary. Explain?
2 Answers
Gaurav
Both sulphur dioxide and chlorine are good bleaching agents. Bleaching action of chlorine is based on oxidation while that of sulphur is based on reduction.
Chlorine acts with water to produce nascent oxygen. This oxygen combines with colourd substance and makes it colourless.
Sulphour dioxide removes oxygen from the coloured substance and makes it colourless. But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.
Chlorine acts with water to produce nascent oxygen. This oxygen combines with colourd substance and makes it colourless.
Sulphour dioxide removes oxygen from the coloured substance and makes it colourless. But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.
Rishi Sharma
Dear Student,
Please find below the solution to your problem.
Both sulphur dioxide and chlorine are good bleaching agents.
Bleaching action of chlorine is based on oxidation while that of sulphur is based on reduction.
Chlorine acts with water to produce nascent oxygen.
This oxygen combines with colourd substance and makes it colourless.
Sulphour dioxide removes oxygen from the coloured substance and makes it colourless.
But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.
Thanks and Regards
Please find below the solution to your problem.
Both sulphur dioxide and chlorine are good bleaching agents.
Bleaching action of chlorine is based on oxidation while that of sulphur is based on reduction.
Chlorine acts with water to produce nascent oxygen.
This oxygen combines with colourd substance and makes it colourless.
Sulphour dioxide removes oxygen from the coloured substance and makes it colourless.
But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.
Thanks and Regards
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago