Why might sodium carbonate (washing soda, Na2CO3) be added to ...

[lbcchick]

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

[af]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: C

[lbcchick]

Both answers were spot on, thank you once again

[af]

Great! Please up vote