Ammonia, NH3 And Hydrazine, NH2NH2, Are Two Compounds Of ...

CoursesCourses for KidsFree study materialOffline CentresMoreStore

Talk to our experts

1800-120-456-456

Sign In

• Question Answer

• Class 12

• Chemistry

• Ammonia NH3 and hydrazine NH2N...

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 MathsAmmonia, $N{H_3}$ and hydrazine, $N{H_2}N{H_2}$, are two compounds of nitrogen, ${N_2}$. Which statement is correct?A.The N-N bond in $N{H_2} - N{H_2}$ is polar.B.$N{H_3}$ and $N{H_2}N{H_2}$ have lone pairs of electrons but ${N_2}$ does not. C.The oxidation number of each nitrogen in $N{H_2}N{H_2}$ is +2.D. The reaction of nitrogen with hydrogen has a high activation rate.AnswerVerified576.9k+ viewsHint: The N-H bond is strong due to the high electronegativity of N atoms and so a large amount of energy is required to break the bond (approximately 386 kJ/mol). Now try all the options and see which one is correct.Complete step by step answer:-In$N{H_2}N{H_2}$, since both the nitrogen atoms have the same value of electronegativity the bond between the 2 nitrogen atoms (N-N) will be non-polar. This contradicts option (A), so option (A) is false.-In $N{H_3}$, out of the 5 electrons from the outermost shell of N, 3 have bonded with 1 Hydrogen atom each. Hence leaving behind a lone pair of electrons.In $N{H_2} - N{H_2}$, for each nitrogen atom having 5 outer shell electrons, 2 are bonded with 1 hydrogen each and with one electron they bond with an electron from the other nitrogen. Hence each of the nitrogen is left with a lone pair of electrons.In${N_2}$, the 2 N atoms are bonded to each other by a triple bond and so leaving behind a lone pair of electrons each. Hence we now know that all three of them have lone pairs of electrons. This conclusion contradicts option (B), so we can say that option (B) is false.-In $N{H_2}N{H_2}$: to calculate the oxidation state (O.s.) of N atoms let us assume it to be ‘x’ and the oxidation state of H is already equal to 1. So: O.s. of 2 N + O.s. of 4 H = O.s. of entire molecule (Total oxidation state of the molecule is 0 because the molecule is electrically neutral 2x + 4 = 0 and so x = -2Hence the oxidation state of each nitrogen here is (-2). This contradicts option (C), so option (C) is also false.-The reaction of nitrogen with hydrogen has a high activation rate due to the high bond energy between them (which was due to high electronegativity of N).Hence, the correct option is: (D).Note:Nitrogen reacts with hydrogen only under high temperature and pressure, that too in the presence of a metal catalyst to overcome the high activation energy. It is a type of combination reaction and produces ammonia. This process is also known as Haber’s process.Recently Updated PagesMaster Class 12 Biology: Engaging Questions & Answers for SuccessMaster Class 12 Physics: Engaging Questions & Answers for SuccessBasicity of sulphurous acid and sulphuric acid areMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Biology: Engaging Questions & Answers for SuccessMaster Class 12 Physics: Engaging Questions & Answers for SuccessBasicity of sulphurous acid and sulphuric acid areMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for Success

• 1
• 2

Trending doubtsWhat are the major means of transport Explain each class 12 social science CBSEWhich are the Top 10 Largest Countries of the World?Draw a labelled sketch of the human eye class 12 physics CBSEHow much time does it take to bleed after eating p class 12 biology CBSEExplain sex determination in humans with line diag class 12 biology CBSEDifferentiate between homogeneous and heterogeneous class 12 chemistry CBSEWhat are the major means of transport Explain each class 12 social science CBSEWhich are the Top 10 Largest Countries of the World?Draw a labelled sketch of the human eye class 12 physics CBSEHow much time does it take to bleed after eating p class 12 biology CBSEExplain sex determination in humans with line diag class 12 biology CBSEDifferentiate between homogeneous and heterogeneous class 12 chemistry CBSE

• 1
• 2

Repeaters Course for NEET 2022 - 23

NEET Repeater 2023 - Aakrosh 1 Year Course