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Diffstat (limited to '632/CH9/EX9.8/example9_8.sce')
-rwxr-xr-x | 632/CH9/EX9.8/example9_8.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/632/CH9/EX9.8/example9_8.sce b/632/CH9/EX9.8/example9_8.sce new file mode 100755 index 000000000..e17fc2398 --- /dev/null +++ b/632/CH9/EX9.8/example9_8.sce @@ -0,0 +1,18 @@ +//clc()
+F = 100;//kg
+xf = 0.15;
+P1 = 80;//% ( Carbonate recovered )
+M1 = 106;//(Molecular weight of Na2CO3)
+M2 = 286;//(Molecular weight of Na2CO3.10H2O)
+x1 = M1 / M2;//(Weight fraction of Na2CO3 in crystals)
+Mrecovered = P1 * F * xf / 100;
+Wcrystal = Mrecovered / x1;
+disp("kg",Wcrystal,"(a)quantity of crystals formed = ")
+//Na2CO3 balance gives, F*xf = Wcrystal*x1 + W2*x2
+//W2 weight of mother liquor remaining after crystallization
+//let M = W2 * x2,therefore
+M = F * xf - Mrecovered;
+x2 = 0.09;
+W2 = M/x2;
+W3 = F - Wcrystal - W2;//weight of water evaporated
+disp("kg",W3,"(b)Weight of water evaporated = ")
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