This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why might sodium carbonate (washing soda, Na2CO3) be added to hard water to aid in cleaning? A) ... (Read 119 times)

lbcchick

  • Hero Member
  • *****
  • Posts: 550
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

af

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: C


lbcchick

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


af

  • Sr. Member
  • ****
  • Posts: 356
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Relationships between direction of flow of blood and water or air in different vertebrates. Relationships between direction of flow of blood and water or air in different vertebrates.
Chinese Water Deer Chinese Water Deer
Calcium Carbonate, an Important Carbon Sink Calcium Carbonate, an Important Carbon Sink
Daily Water Balance in the Body Daily Water Balance in the Body
Osmosis: Water moves from an area of low solute concentration to an area of higher solute ... Osmosis: Water moves from an area of low solute concentration to an area of higher solute ...
Renal regulation of sodium and potassium balance Renal regulation of sodium and potassium balance
Video: Ventilation - phases and driving forces

For a complete list of videos, visit our video library