Why might sodium carbonate (washing soda, Na2CO3) be added to hard water to aid in cleaning?
A) The hard ions in the water are more attracted to the carbonate ions -2 charge.
B) The hard ions are dissolved by the added sodium ions.
C) The soap gets softer due to the added ions.
D) The ions solubilize the soap due to ion-ion intermolecular attraction, which improves the cleaning ability.
E) none of the above
Question 2
Which of the following might best describe the product obtained from soap and hard water (i.e., soap scum)?
A) a
B) b
C) c
D) d
E) none of the above