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प्रश्न
Which is the real bleaching agent present in bleaching powder?
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उत्तर
Chlorine is the real bleaching agent in bleaching powder. Calcium oxychloride, also known as bleaching powder (CaOCl2), is a yellowish-white powder with a strong chlorine odour. Chlorine and calcium carbonate are the products of its reaction with atmospheric carbon dioxide.
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संबंधित प्रश्न
Give the molecular formula of bleaching powder.
Name one compound of calcium which is used for removing the colour of a coloured cloth.
What is “baking powder”?
State two uses of the following compound:
Chlorine
What is the common name of the compound CaOCl2?
What is bleaching powder?
How is bleaching powder prepared? Write a chemical equation of the reaction involved in the preparation of bleaching powder.
State two important uses of bleaching powder.
Which of the following is treated with chlorine to obtain bleaching powder?
A white powdery substance having strong smell of chlorine is used for disinfecting drinking water supply at waterworks. Identify the substance. Give its chemical name and write the chemical reaction for its preparation.
When chlorine and sodium hydroxide being produced during the electrolysis of brine are allowed to mix, a new chemical is formed. Name this chemical and write its uses.
Give a scientific explanation.
Bleaching powder has the odour of chlorine.
Brine is an ____________.
CaOCl2 will liberate Cl2 gas in the presence of
(i) CO2
(ii) HCl
(iii) CO
(iv) NO
The reaction between MnO2 with HCl is depicted in the following diagram. It was observed that gas with bleaching abilities was released.
The chemical reaction between MnO2 and HCl is an example of:
Assertion (A): Reaction of Quicklime with water is an exothermic reaction.
Reason (R): Quicklime reacts vigorously with water releasing a large amount of heat.
