Table of Contents
- 1 Which of the following gas is used as a bleaching agent?
- 2 What are bleaching agents?
- 3 How does SO2 act as oxidising and reducing agent?
- 4 Why is sulphur dioxide a reducing agent?
- 5 Which of the following can act as a dry bleaching agent?
- 6 Which of the following is bleaching agent?
- 7 Can SO2 act as a bleaching agent in moisture?
- 8 How does dry sulphur dioxide bleach clothes?
Which of the following gas is used as a bleaching agent?
SO2 gas
SO2 gas is used as a bleaching agent.
What are bleaching agents?
Bleaching agents are formulations that whiten or lighten a substrate by solubilizing color-producing substances or by altering their light-absorbing properties.
Which of the following is not a bleaching agent?
The Correct Answer is Option 1 i.e D. Sodium Hypochlorite: Sodium Hypochlorite is a chlorine compound.
What is the best bleaching agent?
Hydrogen peroxide is best known for its bleaching reactions at alkaline pH in mechanical and chemical pulp bleaching as well as deinking. Hydrogen peroxide can also be used as a starting chemical for the production of peroxy acids.
How does SO2 act as oxidising and reducing agent?
Why SO2 can act as oxidising as well as reducing agent but H2S act as only reducing agent. In SO2, S is in oxidation state with +4 charge and the highest oxidation state is +6. So, it acts as both oxidising as well as reducing agent. Therefore, it acts only as a reducing agent.
Why is sulphur dioxide a reducing agent?
i) Sulphur dioxide is reducing agent because sulphur has d-orbital so it can easily expand its oxidation state +4 to +6 and thus behave as reducing agent.
Which of the following Cannot act as a bleaching agent?
Chlorine is a good bleaching agent. Bleaching powder in cold water is an excellent bleaching agent. But it cannot act as a good bleaching agent when dissolved in hot water.
Which of the following can not act as a bleaching agent?
Which of the following can act as a dry bleaching agent?
Ozone is used as a dry bleaching agent. Ozone on decomposition gives nascent oxygen So it acts as a bleaching agent.
Which of the following is bleaching agent?
Hydrogen Peroxide is used as a bleaching agent for textile industries due to its highly reactive nature. H2O2 gives H2O and nascent oxygen which is responsible for bleaching.
Which agents is used only for bleaching?
The most common bleaching agents generally fall into two categories: chlorine and its related compounds (such as sodium hypochlorite) and the peroxygen bleaching agents, such as hydrogen peroxide and sodium perborate.
What is the action of sulphur dioxide in bleaching?
It can bleach coloured wool, silk, flower, hair, etc. The bleaching action of sulphur dioxide is due to the formation of nascent hydrogen in presence of moisture, which reduces colouring substance to colourless reduced product. In some cases, bleaching action of SO 2 is due to formation of colourless addition product.
Can SO2 act as a bleaching agent in moisture?
SO 2 can act a a bleaching agent in presence of moisture. It can bleach coloured wool, silk, flower, hair, etc. The bleaching action of sulphur dioxide is due to the formation of nascent hydrogen in presence of moisture, which reduces colouring substance to colourless reduced product.
How does dry sulphur dioxide bleach clothes?
Dry sulphur dioxide does not have any bleaching action. However, if the gas is moist, or if the object to be bleached is moist, then bleaching takes place. Usually only delicate articles such as coloured flowers, silk, wool etc., are bleached by sulphur dioxide.
What happens when sulphur dioxide is added to a colourless substance?
Sulphur 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. Upvote if you liked the answer! Follow me for more stuff!