Concept explainers
(a)
Interpretation:
The stretching which requires lowest quantity of energy in the IR spectrum of ethanol has to be given.
Concept Introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the
(b)
Interpretation:
The stretching which requires highest quantity of energy in the IR spectrum of ethanol has to be given.
Concept Introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the functional groups present in the given compound sample by absorbing characteristic frequency in particular range with respect to the group present in the given sample.
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Chemistry: The Molecular Science
- The vibrations of a CO2 molecule are symmetrical stretch, bend, and asymmetrical stretch (Figure ), with frequencies of 4.02x1013 s-1, 2.00x1013 s-1, and 7.05x1013 s-1, respectively. (a) What wavelengths correspond to these vibrations? (b) Calculate the energy (in J) of each vibration. Which uses the least energy?arrow_forward(a) What are trihalomethanes (THMs)? (b) Draw the Lewisstructures of two example THMs.arrow_forwardOrganic compounds (a) A simple molecule with alternating single and double bonds is buta-1,3-diene. (i) Draw its skeletal structure. (ii) Write its molecular formula and empirical formula. (iii) How many carbon atoms have sp2 hybridization in buta-1,3-diene?arrow_forward
- 2(a) Provide the Lewis structures for both CH3OH and C2H3Cl. 2(b) What is the largest bond angle among all the bond angles in CH3OH and C2H3Cl? Listthe three atoms making this largest bond angle, and estimate the value of the angle.2(c) What intermolecular forces are present(i) between CH3OH molecules?(ii) between C2H3Cl molecules?arrow_forwardPropylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is given. (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make σ bonds in the molecule? (c) How many valenceelectrons are used to make π bonds in the molecule? (d) Howmany valence electrons remain in nonbonding pairs in themolecule? (e) What is the hybridization at each carbon atomin the molecule?arrow_forwardAccording to recent spectroscopic results, nitramide H N-N H is a nonplanar molecule. It was previously thought to be planar.arrow_forward
- CTQ 7: Why is it incorrect to describe the process of boiling as 2H,0(1) → 2H,(g) + 0,(g)?arrow_forward4. (a) Draw the shape of the atomic valence orbitals formed by the overlaping of two fluoride 2p atomic orbitals. (b) Draw the molecular orbital diagrams for F2 and F2*. Identify their bond order and magnetic properties. (c) An unstable nucleus exhibit radioactivity. (i) Explain how the number of protons and neutrons in a radioactive nucleus can be used to predict its probable mode decay. (ii) Illustrate your answer in (i) with a schematic graph.arrow_forwarda NBS hv, CCl4 (a) Br (b) (c) Br COD d •••d (d) Br Brarrow_forward
- There is persuasive evidence for the brief existence of the unstable molecule OPCl. (a) Draw a Lewis diagram for this molecule in which the octet rule is satisfied on all atoms and the formal charges on all atoms are zero. (b) The compound OPCl reacts with oxygen to give O2PCl. Draw a Lewis diagram of O2PCl for which all formal charges are equal to zero. Draw a Lewis diagram in which the octet rule is satisfied on all atoms.arrow_forwardPropylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make s bonds in the molecule? (c) How many valenceelectrons are used to make p bonds in the molecule? (d) Howmany valence electrons remain in nonbonding pairs in themolecule? (e) What is the hybridization at each carbon atomin the molecule?arrow_forwardThe drawing below shows the overlap of two hybrid orbitalsto form a bond in a hydrocarbon. (a) Which of the followingtypes of bonds is being formed: (i) C¬C σ, (ii) C¬C π,or (iii) C¬H σ? (b) Which of the following could be theidentity of the hydrocarbon: (i) CH4, (ii) C2H6, (iii) C2H4, or(iv) C2H2?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning