Respuesta :
Answer :
(a) Lewis-acid = [tex]Ni(NO_3)_3[/tex] and Lewis-base = [tex]H_2O[/tex]
(b) Lewis-acid = [tex]HF[/tex] and Lewis-base = [tex](CH_3)_2NH[/tex][/tex]
Explanation :
According to the Lewis acid-base theory,
Lewis acid : It is a substance that can accepts a pair of electrons to form a covalent bond.
Lewis-base : It is a substance that can donates a pair of electrons to form a covalent bond.
(a) The given chemical reaction is,
[tex]Ni(NO_3)_3(s)+6H_2O(l)\rightarrow [Ni(H_2O)_6]^{3+}(aq)+3NO_3^-(aq)[/tex]
As per Lewis acid-base theory, [tex]H_2O[/tex] is the Lewis-base that donates a pair of electrons to [tex]Ni^{3+}[/tex] which is a Lewis-acid.
(b) The given chemical reaction is,
[tex](CH_3)_2NH(g)+HF(g)\rightarrow (CH_3)_2NH_2F(s)[/tex]
As per Lewis acid-base theory, [tex](CH_3)_2NH[/tex] is the Lewis-base that donates a pair of electrons to [tex]HF[/tex] which is a Lewis-acid.
A) Lewis base and acid are respectively; H₂O and Ni(NO₃)₃
B) Lewis base and acid are respectively; (CH₃)₂NH and HF
What is Lewis Acid and Lewis Base?
Lewis acid is defined as a substance that can accept a pair of electrons to form a covalent bond while Lewis base is defined as a substance that can donate a pair of electrons to form a covalent bond.
A) Ni(NO₃)₃ (s) + 6H₂O(l) → [Ni(H₂O)₆]³⁺(aq) + 3NO₃⁻(aq)
From this reaction we can see that H₂O donates a pair of Hydrogen electrons to Ni³⁺. Thus, the Lewis base is H₂O while the Lewis Acid is Ni(NO₃)₃
B) (CH₃)₂NH(g) + HF(g) → (CH₃)₂NH₂F(s)
From this reaction we can see that the Lewis base that donates is (CH₃)₂NH while the Lewis acid that accepts is HF
Read more about lewis acid and base at; https://brainly.com/question/17111419
