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Friday, July 1, 2011

Why aqueous solution of sodium carbonate is basic in nature?

Question: Why aqueous solution of sodium carbonate is basic in nature?


Answer: Sodium bicarbonate is an amphoteric compound. Aqueous solutions are mildly alkaline due to the formation of carbonic acid and hydroxide ion:
NaHCO− 3 + H2O → H2CO3 + OH−  
Question: Why is an aqueous solution of ammonium chloride acidic in nature?
Answer: A basic component is the one that produces hydroxide (OH-) ions when dissolved in water. In aqueous solution of ammonium chloride, ammonium ions (NH4+) first associate with H2O and form ammonia and hydroxide ions.
NH4Cl + H2O = NH4+ + HCl ( equation 1)
NH4+ + H2O = NH3 + OH- (equation 3)
Since ammonium ions produce hydroxide ions, NH4+ are considered to be the basic components.
For more Questions: Visit: www.jsuniltutorial.weebly.com/ 
and:
http://chemistryadda.blogspot.in/2011/06/extrascore-science-acid-base-and-salt.html

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