What Happened When: BF3 Is Reacted With Ammonia? - Vedantu

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• What happened when BF3 is reac...

AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsWhat happened when:$B{{F}_{3}}$ is reacted with ammonia?AnswerVerified572.7k+ viewsHint: The $B{{F}_{3}}$ is a Lewis acid i.e. an electron deficient species and $N{{H}_{3}}$ is a Lewis base, a species which consists of lone pairs that can be donated for the formation of bonds.- $N{{H}_{3}}$ molecule consists of a lone pair of electrons .Complete Solution :So here in the question we are asked to predict what happens when $N{{H}_{3}}$ and $B{{F}_{3}}$ reacts together.Before predicting the product let’s see some characteristics of ammonia and boron trifluoride.So in $B{{F}_{3}}$ molecule B is the central atom and we know that the$B{{F}_{3}}$ is a Lewis acid i.e. an electron deficient species.- The atomic number of B is 5 and has an electronic configuration:$\text{E}\text{.C}\,\text{of}\,\text{B=1}{{\text{s}}^{\text{2}}}\text{2}{{\text{s}}^{\text{2}}}\text{2}{{\text{p}}^{\text{1}}}$- The valency possessed by the B atom is +3.- The hybridization of $B{{F}_{3}}$ molecule is $s{{p}^{2}}$ and hence having a planar structure.- In $N{{H}_{3}}$ molecule, N is the central atom having the atomic number 7 and the electronic configuration is,$\text{E}\text{.C}\,\text{of}\,\text{N=1}{{\text{s}}^{\text{2}}}\text{2}{{\text{s}}^{\text{2}}}\text{2}{{\text{p}}^{\text{3}}}$Ammonia is a $s{{p}^{3}}$ hybridized molecule in which one lone pair is present and hence having a trigonal pyramidal structure.So as we discussed earlier $B{{F}_{3}}$ is a Lewis acid and requires two electrons for B to obtain the octet configuration and $N{{H}_{3}}$ consists of one lone pair of electron and it acts as the Lewis base according to Lewis theory.Hence the $N{{H}_{3}}$ molecule donates its lone pair of electrons to the $B{{F}_{3}}$ molecule and forms a coordinate bond.So the ammonia and boron trifluoride on reactions forms an adduct. $N{{H}_{3}}$ The hybridization of this adduct formed is $s{{p}^{3}}$ hybridized adduct.Note: The hybridization of a molecule is calculate using the formulae,$\text{steric number = No}\text{. of bps + No}\text{.of lps}$Bps refers to bond pairs and lps refers to lone pairs and the steric number obtained will give an idea about the hybridization of the molecule.Recently Updated PagesMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 11 Social Science: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Chemistry: Engaging Questions & Answers for SuccessMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 11 Social Science: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Chemistry: Engaging Questions & Answers for Success

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