diff options
Diffstat (limited to '821/CH7/EX7.30/7_30.sce')
| -rwxr-xr-x | 821/CH7/EX7.30/7_30.sce | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/821/CH7/EX7.30/7_30.sce b/821/CH7/EX7.30/7_30.sce new file mode 100755 index 000000000..4f322ea41 --- /dev/null +++ b/821/CH7/EX7.30/7_30.sce @@ -0,0 +1,7 @@ +Fe=0.01;//concentration of Fe3+ ions in the solution//
+Ksp=3.8*10^-38;//Solubility product of Fe(OH)3//
+OH=(Ksp/Fe)^0.333;//Concentration of OH- ions in the solution//
+printf('Concentration of OH- ions in the solution=OH=%f=1.561*10^-12',OH);
+printf('\nAt this PH,Fe(OH)3 starts precipitating and precipitation is complete (Fe3+)=10^-6M\n(10^-6)(OH-)^3 = 3.8*10^-38 ');
+printf('\nupon solving this we get (OH-)=3.362*10^-11\nPOH=10.48 or PH=3.52');
+printf('\nAt this PH the precipitation of Fe(OH)3 is almost complete.');
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