Multiple Choice
The lime- soda process is used for large- scale water- softening operations. CaO is added to
)
A) cause precipitation of iron and magnesium as Fe2MgO4
B) reduce the pH to 3- 4
C) cause precipitation of magnesium as Mg(OH) 2
D) oxidize Fe2+ to insoluble Fe2O3
E) remove most Al3+ as solid Al(OH) 3
Correct Answer:
Verified
Correct Answer:
Verified
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