***For Purification of Sodium Chloride experiment please answer the following: 1- Is it practicable to use CaCl 2 , inst
Posted: Tue Jul 12, 2022 1:03 pm
***For Purification of Sodium Chlorideexperiment please answer the following:
1- Is it practicable to use CaCl 2 ,instead of the more toxic BaCl 2 , to removeSO 4 2‒ ?
2- Can we use other soluble carbonates other thanNa 2 CO 3 to removeCa 2+ , Mg 2+ , SO 4 2‒ ? Andwhy?
3- Why the pH of solution should be adjusted to 3~4 whenremoving CO 3 2‒ , and howabout ~pH 7.0 ?
4- Can tap water be used to dissolve the coarse salt ?
1- Is it practicable to use CaCl 2 ,instead of the more toxic BaCl 2 , to removeSO 4 2‒ ?
2- Can we use other soluble carbonates other thanNa 2 CO 3 to removeCa 2+ , Mg 2+ , SO 4 2‒ ? Andwhy?
3- Why the pH of solution should be adjusted to 3~4 whenremoving CO 3 2‒ , and howabout ~pH 7.0 ?
4- Can tap water be used to dissolve the coarse salt ?