Homework Answers
Q11) Ammonia has three bond pairs and one lone pair. It has tetrahedral geometry and its shape is pyramidal.
In NH3, nitrogen is the most electronegative element. So it abstract electrons and posses partial negative charge whereas hydrogens have a partial positive charge.
The valence shell electronic configuration of N atom is 2s2 2p3. Nitrogen in ammonia has only one lone pair(2s2) and 3 bond pairs (2p3).
The net dipole of NH3 is 1.46D.
So all statements are incorrect.
Option 1 is correct.
Q12) The H-F bond has the strongest bond energy. Means 565 kJ/mol energy is required to break the bond between the H-F molecule.
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QUESTION 11 The ammonia molecule, NH3, can be accurately described by which of the following statements?...
For the molecule given above, what is the molecular geometry around the carbon on the left
(C on left: dbl bond o, sngl bond H, sngl bond c) (c in center: 2 sngl bond H, sngl bond c, sngl bond N) (N on right: 2 sngl bond H, sngl bond C, one lone pair) For the molecule given above, what is the molecular geometry around the carbon on the left, the carbon in the center and the nitrogen on the right, in that order? trigonal planar, tetrahedral, trigonal pyramidal tetrahedral, tetrahedral, tetrahedral trigonal planar, tetrahedral, tetrahedral trigonal planar, tetrahedral, trigonal planar trigonal pyramidal, trigonal...
Ammonia (NH3) is a covalently bonded molecule, made up of three N-H bonds. For this question,...
Ammonia (NH3) is a covalently bonded molecule, made up of three N-H bonds. For this question, you should use the following values: H-N bond energy = 388 kJ mol-1 Atomic mass of nitrogen =14.007 g mol-1 Atomic mass of hydrogen =1.008 g mol-1 (a) Calculate the molecular mass of NH3 . Give your answer in g mol-1 to three significant figures. (2 marks) (b) Calculate the number of moles in 76 grammes (g) of NH3 . Give your answer to...
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3...
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3 molecules are polar. O Dipole-dipole forces and dispersion forces exist between PH3 molecules. o (N) atom makes sp3 hybridization in NH3 molecule. O PH3 molecule has trigonal pyramidal geometry. O Normal boiling point of PH3 is higher than that of NH3.
Check all of the following statements that are true for NCI2? The Cl-N-Cl bond angle in this molecule is less than 109....
Check all of the following statements that are true for NCI2? The Cl-N-Cl bond angle in this molecule is less than 109.5° The Root geometry for the molecule is trigonal planar. The Cl atoms are sp3 hybridized The central atom is sp2 hybridized The shape of the molecule is trigonal pyramid There are 2 lone pairs on the central atom in this molecule. The Cl-N-CI bond angle in this molecule is greater than 120°. The bond between N and Cl is a pi bond
The enthalpy change for the following reaction is 95.4 kJ. Using bond energies, estimate the N-H...
The enthalpy change for the following reaction is 95.4 kJ. Using bond energies, estimate the N-H bond energy in N2H4(g). N2(g) + 2H2(g) N2H4(g) kJ/mol The enthalpy change for the following reaction is -92.2 kJ. Using bond energies, estimate the H-H bond energy in H2(g). 2NH3(g) N2(g) + 3H2(g) kJ/mol D Single Bonds Multiple Bonds C N O F Si P S a Br 1 H 436 413 391 463 565 318 322 347 C 413 346 305 358 485...
Question 1: Consider the molecule ammonia (NH3), which has a ∆Hvap of 24.7 kJ/mol. a. Draw...
Question 1: Consider the molecule ammonia (NH3), which has a ∆Hvap of 24.7 kJ/mol. a. Draw the Lewis structure of ammonia. b. What is the strongest intermolecular force present in ammonia? c. At -38 °C the Pvap for ammonia is 597 torr. What is Pvap at -73 °C?
.The enthalpy change for the following reaction is -137 kJ. The enthalpy change for the following...
.The enthalpy change for the following reaction is -137 kJ. The enthalpy change for the following reaction is -137 kJ. C2H4(g) + H2(g) -> C2H6(g) To analyze the reaction, first draw Lewis structures for all reactant and product molecules. Estimate the C-C bond energy in C2H6(g) , using tabulated bond energies (linked above) for the remaining bonds H C N O F Si P S Cl Br I H 436 413 391 463 565 318 322 347 432 366 299...
a. b. For b is this table below: Bond Bond Energy, D (kJ/mol) C=0 1072 C1-C1...
a.
b. For b is this table below:
Bond Bond Energy, D (kJ/mol) C=0 1072 C1-C1 242 C-CI 339 C=0 732 Using the values of bond energy from the table above, estimate the enthalpy change for the following reaction: CO(g) + Cl2(9)—>COC12(E) DkJ Using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: H2(g) + 12(8)—2HI(g) kJ Submit Answer Retry Entire Group 6 more group attempts remaining Single Bonds H C N O F Si P...
Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4NH3(g) + 7O2(g) --->...
Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4NH3(g) + 7O2(g) ---> 4NO2(g) + 6H2O(g) Using the following bond energies, estimate the enthalpy change for the reaction. BE(O–H) = 464 kJ/mol BE(N–H) = 389 kJ/mol BE(O=O) = 498 kJ/mol BE(N–O) = 222 kJ/mol BE(N=O) = 590 kJ/mol
Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4 NH3(g) + 7...
Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4 NH3(g) + 7 O2(g) ---> 4 NO2(g) + 6 H2O(g) Use the following data for bond energies to determine the determine the enthalpy of the reaction. O−H : 459 kJ/mol N−H : 386 kJ/mol N−O : 201 kJ/mol N=O : 607 kJ/mol O=O : 494 kJ/mol The answer my professor gives is -4163 kJ/mol but I don't know how to get that answer especially with the bonds...
(C on left: dbl bond o, sngl bond H, sngl bond c) (c in center: 2 sngl bond H, sngl bond c, sngl bond N) (N on right: 2 sngl bond H, sngl bond C, one lone pair) For the molecule given above, what is the molecular geometry around the carbon on the left, the carbon in the center and the nitrogen on the right, in that order? trigonal planar, tetrahedral, trigonal pyramidal tetrahedral, tetrahedral, tetrahedral trigonal planar, tetrahedral, tetrahedral trigonal planar, tetrahedral, trigonal planar trigonal pyramidal, trigonal...
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3 molecules are polar. O Dipole-dipole forces and dispersion forces exist between PH3 molecules. o (N) atom makes sp3 hybridization in NH3 molecule. O PH3 molecule has trigonal pyramidal geometry. O Normal boiling point of PH3 is higher than that of NH3.
Check all of the following statements that are true for NCI2? The Cl-N-Cl bond angle in this molecule is less than 109.5° The Root geometry for the molecule is trigonal planar. The Cl atoms are sp3 hybridized The central atom is sp2 hybridized The shape of the molecule is trigonal pyramid There are 2 lone pairs on the central atom in this molecule. The Cl-N-CI bond angle in this molecule is greater than 120°. The bond between N and Cl is a pi bond
The enthalpy change for the following reaction is 95.4 kJ. Using bond energies, estimate the N-H bond energy in N2H4(g). N2(g) + 2H2(g) N2H4(g) kJ/mol The enthalpy change for the following reaction is -92.2 kJ. Using bond energies, estimate the H-H bond energy in H2(g). 2NH3(g) N2(g) + 3H2(g) kJ/mol D Single Bonds Multiple Bonds C N O F Si P S a Br 1 H 436 413 391 463 565 318 322 347 C 413 346 305 358 485...
a.
b. For b is this table below:
Bond Bond Energy, D (kJ/mol) C=0 1072 C1-C1 242 C-CI 339 C=0 732 Using the values of bond energy from the table above, estimate the enthalpy change for the following reaction: CO(g) + Cl2(9)—>COC12(E) DkJ Using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: H2(g) + 12(8)—2HI(g) kJ Submit Answer Retry Entire Group 6 more group attempts remaining Single Bonds H C N O F Si P...
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