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Acids and Bases
CHEMISTRY - Secondary 1
In This part we will study
 Lewis's theory in 1923:
Lewis proposed an acid-base theory which depends on sharing a lone pair of electrons between acid and base.
Lewis acid: It is the substance that accepts an electron pair or more.
Lewis base: It is the substance that donates an electron pair or more.
Application Lewis-theory explains the reaction of formation of hydrogen fluoride HF
Example
Mention the acid and base according to Lewis's theory, when ammonia gas dissolves in water.

Ammonia is considered as a base, although it doesn't contain hydroxide group in its structure, because according to Brönsted-Lowry's theory, ammonia accepts a proton from another substance (as water) during the reaction and according to Lewis's theory it donates a lone pair of electrons to another substance (as water) during the reaction.
 All the previous theories can be summarized as the following :
Best wishes to you
Mr.Ahmed Elbasha

كيمياء الصف الاول الثانوي لغات - الفصل الدراسي الاول
شرح كيمياء لغات اولي ثانوي - مستر احمد الباشا
كيمياء لغات - الصف الاول الثانوي - كيمياء اولي ثانوي الترم الاول - كيمستري اولي ثانوي الترم الاول