s-Block ElementsHard
Question
In which of the following process, Black ash (Na2CO3 + CaS) is obtained ?
Options
A.Le-Blanc process
B.Prechts process
C.Hargreaves process
D.Gossage process
Solution
(A) It is used for the manufacture of Na2CO3 from NaCl
NaCl + H2SO4 (conc.)
NaHSO4 + HCl
NaHSO4 + NaCl
Na2SO4 + HCl
Na2SO4 + CaCO3 + 4 C
+ 4CO
NaCl + H2SO4 (conc.)
NaHSO4 + HClNaHSO4 + NaCl
Na2SO4 + HClNa2SO4 + CaCO3 + 4 C
+ 4COCreate a free account to view solution
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