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Author Question: Why might sodium carbonate (washing soda, Na2CO3) be added to hard water to aid in cleaning? A) ... (Read 138 times)

lbcchick

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on: Jul 29, 2018
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


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af

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: C


lbcchick

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


af

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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