Question

write the chemical equation of one method each of making plaster of paris and bleaching powder​

Answer 1

Answer:

Chemical Equation for making of Plaster of Paris :

$CaSO_{4} . 2 H_{2} O + heat$ →$CaSO_{4} . 1/2 H_{2} O + 1.5 H_{2} O$

Chemical Equation for making Bleaching Powder :

$2Ca(OH)_{2} +2Cl_{2}$ → $Ca(OCl)_{2} +CaCl_{2} + 2H_{2}O$

Explanation:

Plaster Of Paris :

• Plaster of Paris is a white powdered chemical compound that is hydrated calcium sulphate and is often obtained by calcining gypsum, despite the fact that we have seen various applications of this substance in our daily lives.

• Gypsum plaster is another name for the plaster of Paris.

• $CaSO_{4} . 1/2 H_{2} O$ is the written version of the plaster of Paris chemical formula.

• Gypsum is heated to between 373 and 393 K, or 150° C and 300° F, to create plaster of Paris.
• $CaSO_{4} . 2 H_{2} O + heat$ → $CaSO_{4} . 1/2 H_{2} O + 1.5 H_{2} O$

• Gypsum loses water molecules when heated between 373 and 393 K, turning into calcium sulphate hemihydrate.
• The hardening and setting process begins around 10 minutes after the mixture is blended and lasts for about 45 minutes. It will take 70 to 75 hours for it to be fully set.

Bleaching Powder

• Dry chlorine gas is applied to dry slaked lime to create bleaching powder.
• The Chemical Equation involved in the preparation of Bleaching Powder is
• $2Ca(OH)_{2} +2Cl_{2}$  →  Ca(OCl)_{2} +CaCl_{2} + 2H_{2}O

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