What is resonance phenomenon? Show the resonating structure of Benzene. And Calculate pH of buffer solution containing 0.03mol per lit of acetic acid and 0.05mol per lit of sodium acetate.
Answers
Answer:
Carbonate ion
Explanation:
Carbonate ion is a common polyatomic ion found in limestone, baking powder and baking soda. Addition of acid to the carbonate ion causes the formation of carbonic acid, which decomposes rapidly into water and carbon dioxide. In baking the carbon dioxide that is released causes bread to rise and makes its texture lighter.
Our first attempt at drawing the lewis dot structure of the carbonate ion results in the structure shown below. Carbonate has 24 electrons, 2 of them responsible for the -2 charge, probably electrons from calcium, sodium or whatever salt resulted in a cation that donated electrons to the carbonate anion. The carbon atom in pure structure still needs to share electrons to satisfy the octet rule. Which atom is most likely involved in sharing electrons.
Using the formal charges on the atoms, we could reconfigure our electrons to participate in a double bond with the carbon. At this point the positive charge on the carbon atom is gone and all the valence is filled; the octet rule is satisfied. The sum of the formal charges is equivalent to the charge on the carbonate ion. This is a good Lewis dot structure for carbonate