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(i) Write the chemical name and chemical...

(i) Write the chemical name and chemical formula of washing soda.
(ii) How is it obtained from sodium chloride? Give equations of the reaction.
(iii) Why it is called a basic salt?

Text Solution

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(i) Chemical name : Sodium carbonate decahydrate
Formula: `Na_2CO_3. 10 H_2O`
(ii) `NaCl+H_2O+CO_2+NH_3 toNh_4Cl+NaHCO_3`
`2NaHCO_3 to^(Delta)Na_2CO_2+CO_2 uparrow+H_2O`
`Na_2CO_3+10H_2O toNa_2CO_3. 10 H_2O`
It is a basic salt because when dissolved in water, it gives a strong base NaOH.
It is used as a cleaning agent, in paper and glass industry.
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