initial commit / add all books

1 files changed, 24 insertions, 0 deletions

diff --git a/1427/CH1/EX1.12/1_12.sce b/1427/CH1/EX1.12/1_12.sce
new file mode 100644
index 000000000..0fef3bc4a
--- /dev/null
+++ b/1427/CH1/EX1.12/1_12.sce
@@ -0,0 +1,24 @@
+//ques-1.12

+//Calculating amount of lime and soda required for softening hard water

+clc

+V=2000;//volume of water given (in L)

+

+//Raw water

+A=160;//content of Ca cation (in mg/L)

+B=72;//content of Mg cation (in mg/L)

+C=732;//content of Hydrogen carbonate anion (in mg/L)

+D=30;//content of CO2 (in mg/L)

+a1=(A/40)*100;//CaCO3 equivalent of A (in ppm)

+a2=(B/24)*100;//CaCO3 equivalent of B (in ppm)

+a3=(C/122)*100;//CaCO3 equivalent of C (in ppm)

+a4=(D/44)*100;//CaCO3 equivalent of D (in ppm)

+

+//Treated water

+E=30;//content of Carbonate anion (in mg/L)

+F=17;//content of Hydroxide anion (in mg/L)

+a5=(E/60)*100;//CaCO3 equivalent of E (in ppm)

+a6=(F/34)*100;//CaCO3 equivalent of F (in ppm)

+

+lime=(a2+a3+a4+a6)*(74/100)*V;//lime required (in mg)

+soda=(a1+a2-a3+a5)*(106/100)*V;//soda required (in mg)

+printf("Lime required for softening of hard water is %.4f kg and Soda required is %.3f kg.",lime/1000000,soda/1000000);