What happens when Gypsum is heated upto 373 ∘ K (Write only chemical equation).

Gypsum(calcium sulphate dihydrate) is heated to a temperature of 373 ° K 100 ° C to prepare Plaster of Paris in a kiln. During this chemical reaction, gypsum loses three-fourths of its water of crystallisation to form calcium sulphate hemi hydrate. Therefore, the following reaction is observed- CaSO 4 . 2 H 2 O Gypsum → ∆ , 100 ° C CaSO 4 . 1 2 H 2 O Plaster of Paris + 3 2 H 2 O Water

Write chemical formula of the following- Bleaching Powder

Bleaching powder is a white powder which has a strong smell of chlorine and that is why it is known as chloride of lime. It is soluble in cold water. The molecular name of bleaching powder is calcium oxychloride and the chemical formula is CaOCl 2 . It is mainly used as disinfecting agents, bleaching cotton, preparing chloroform, etc. This can be prepared by passing chlorine gas over dry slaked lime. Therefore, the following chemical reaction will take place- Ca OH 2 Calcium Hydroxide Slaked lime + Cl 2 Chlorine → CaOCl 2 Calcium oxychloride Bleaching Powder + H 2 O Water

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Write the chemical name and formula of bleaching powder.

Important Questions on Compounds of Common Use

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Write only chemical equation for the reaction of preparation of bleaching powder. Give its one use also.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

What is gypsum? What happens when gypsum is heated to $373 K$ ?

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

What happens when bleaching powder reacts with dil. hydrochloric acid. Write only chemical equation.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

What happens when Gypsum is heated upto

373^{\circ} K

(Write only chemical equation).

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Plaster of Paris hardens by:

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Answer the following:

A calcium compound having odour of chlorine is used to remove yellowish-white clothes in laundries. Name the compound.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Which of the following is used to purify drinking water?

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

What is the common name of compound

{CaOCl}_{2}

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Write any two uses of plaster of Paris.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Write the molecular formulae and two uses of plaster of Paris.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Write the chemical name, formula and two uses of bleaching powder.

MEDIUM

Science>Chemistry>Compounds of Common Use>Bleaching Powder

A compound that is prepared from gypsum has the property of hardening when mixed with the proper quantity of water. Write the chemical name of the compound.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Why should we store Plaster of Paris in a moisture-proof container? Write its equation.

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Science>Chemistry>Compounds of Common Use>Bleaching Powder

Write chemical formula of the following-