s-Block ElementsHard
Question
Chemical (X) is used for :
(i) the production of sodium hydroxide
(ii) the manufacturing of bleaching powder
(iii) for the extraction of magnesium from sea water. What is the chemical formula of (X)?
(i) the production of sodium hydroxide
(ii) the manufacturing of bleaching powder
(iii) for the extraction of magnesium from sea water. What is the chemical formula of (X)?
Options
A.Ca(OH)2
B.CaO
C.Ca(HCO3)2
D.CaCO3
Solution
(i) Ca(OH)2 + Na2CO3 → CaCO3 + NaOH
(ii) 3Ca(OH)2 + 2Cl2 → Ca(OCl)2.Ca(OH)2. CaCl2.2H2O (bleaching powder).
(iii) MgCl2 (from sea water) + Ca(OH)2 → Mg(OH)2 ↓ + CaCl2 (Dow′s process)
(ii) 3Ca(OH)2 + 2Cl2 → Ca(OCl)2.Ca(OH)2. CaCl2.2H2O (bleaching powder).
(iii) MgCl2 (from sea water) + Ca(OH)2 → Mg(OH)2 ↓ + CaCl2 (Dow′s process)
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