Chemistry In Focus
7th Edition
ISBN: 9781337399692
Author: Tro, Nivaldo J.
Publisher: Cengage Learning,
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Chapter 5, Problem 41E
G. N. Lewis developed a model for
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Part A) Consider the structural changes that occur in the following molecules. Begin by drawing the best Lewis Structure for each of the following molecules. BH3 CH4 NH3 H2O HF
Part B)What are the ideal bond angles for each structure, and which are expected to be distorted? For the ones that are distorted look up on the internet and record their experimental values here:
Part C)According to Lewis and VSEPR theory, why do these changes occur?
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Chapter 5 Solutions
Chemistry In Focus
Ch. 5 - Drawing Lewis Structures for Ionic Compounds Draw...Ch. 5 - Using Lewis Structures to Determine the Correct...Ch. 5 - Prob. 5.3YTCh. 5 - Prob. 5.4YTCh. 5 - Drawing Lewis Structures for Covalent Compounds...Ch. 5 - Prob. 5.6YTCh. 5 - Prob. 5.7YTCh. 5 - Prob. 5.8YTCh. 5 - Prob. 5.9YTCh. 5 - Determining if a Molecule Is Polar Is SCl2 a polar...
Ch. 5 - Based on the Lewis structures for hydrogen and...Ch. 5 - Prob. 2SCCh. 5 - Prob. 3SCCh. 5 - Prob. 4SCCh. 5 - Which one of the following bonds is polar? a. a...Ch. 5 - Prob. 6SCCh. 5 - Why is salt, NaCl, relatively harmless even though...Ch. 5 - If sodium is dropped into water, a loud fizzing...Ch. 5 - Explain ionic bonding according to Lewis theory.Ch. 5 - Prob. 4ECh. 5 - Prob. 5ECh. 5 - Prob. 6ECh. 5 - Draw electron dot structures for the following...Ch. 5 - Explain VSEPR theory. According to this theory,...Ch. 5 - Prob. 9ECh. 5 - Prob. 10ECh. 5 - In what ways is water unique? What about the water...Ch. 5 - What is the difference between a polar and a...Ch. 5 - Why do polar molecules have a greater tendency to...Ch. 5 - Prob. 14ECh. 5 - Lewis Structures for Atoms Draw Lewis structures...Ch. 5 - Draw Lewis structures for each of the following...Ch. 5 - Ionic Lewis Structures Draw a Lewis structure for...Ch. 5 - Draw a Lewis structure for each of the following...Ch. 5 - Draw a Lewis structure for each of the following...Ch. 5 - Draw a Lewis structure for each of the following...Ch. 5 - Covalent Lewis Structures Draw a Lewis structure...Ch. 5 - Draw a Lewis structure for each molecular...Ch. 5 - General Lewis Structures Determine whether each...Ch. 5 - Determine whether each compound is ionic or...Ch. 5 - What is wrong with each Lewis structure? Fix the...Ch. 5 - What is wrong with each Lewis structure? Fix the...Ch. 5 - Predicting the Shapes of Molecules Use VSEPR...Ch. 5 - Use VSEPR theory to determine the geometry of the...Ch. 5 - Draw a Lewis structure and use VSEPR theory to...Ch. 5 - Draw a Lewis structure and use VSEPR theory to...Ch. 5 - CF2Cl2 is a chlorofluorocarbon implicated in ozone...Ch. 5 - Chlorofluorocarbons have been banned because they...Ch. 5 - Determining Molecular Polarity Determine whether...Ch. 5 - Determine whether each molecule is polar:...Ch. 5 - Determine whether each molecule is polar:...Ch. 5 - Determine whether each molecule is polar:...Ch. 5 - Explain why water would be a gas at room...Ch. 5 - Prob. 38ECh. 5 - Prob. 39ECh. 5 - One of the observations that led G. N. Lewis to...Ch. 5 - G. N. Lewis developed a model for chemical bonding...Ch. 5 - The opening quote of this chapter states that Man...Ch. 5 - Draw a Lewis structure of the H2 molecule. If you...Ch. 5 - Prob. 44ECh. 5 - The Lewis structures for CH4,N2,andCO2, along with...Ch. 5 - CH3COCH3 (acetone) is a common laboratory solvent...
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- Why is this theory successful? Can you name some of the limitations of the theory? Drag the appropriate items to their respective bins. to determine the shape of the molecule or ion to determine the formulas of ionic compounds Lewis theory allows us to account for the paramagnetism of some species (e.g. oxygen) to determine how the bonds in the molecules and ions form to predict what molecules or ions will be stable, which will be more reactive, and which will not exist to account for the low melting points and boiling points of molecular compounds compared to ionic compounds Lewis theory does not allow us Reset Helparrow_forward10.) The structural formula of a certain aldehyde (related to formaldehyde) is H3C-CH2-CHO. Draw a Lewis structure for this aldehyde and determine the number of bonds present. Note that a single or a double or a triple bond counts as one bond. Write the number, not the word.arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: 0 Yes. No, it has the wrong number of valence electrons. a=ö:] The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: 0 Yes. No, it has the wrong number of valence electrons. :0: The correct number is: 0 HIC-H No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:" * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". X 5 ? : Z: I :Z:arrow_forward
- 4. Lewis dot structures are good tools for showing the arrangement of valence electrons in a molecule. They don't however convey correct information about the shape of a molecule. A student described the shapes of the molecules shown below. Both are incorrect. Write an explanation for this student explaining what he did wrong and giving the correct shape of each molecule based on VSEPR theory. Lewis Structure Student identified molecule geometry as... Н—О—H Linear WATER H H:C:H Square planar H МЕТHANEarrow_forwardPart 4: 4a. Draw the best Lewis structure for the CH3COOH (acetic acid) molecule. (Hint: the acidic H is bonded to O in an oxy-acid molecule). Evaluate each atom using formal charge to prove you have the best structure. Show your math work as well as your formal charge answers. 4b. Draw all the resonance structures for the CH3COO- (acetate ion). (Hint: make sure you have the best initial structure first!)arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. Н— Br The correct number is: U No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. .. The correct number is: O Н — С — С — Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: || Н — Н- No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* :0 : :arrow_forward
- A. State the Octet Rule.B. Write the Lewis symbol of neon. Is the neon atom stable? Does neon exist as atoms in nature? If not, how does neon exist in nature.C. Write the Lewis symbol of nitrogen. Is the nitrogen atom stable? Does nitrogen exist as atoms in nature? If not, how does nitrogen exist in nature.arrow_forward2. Avogadro does not "waste" his time drawing a Lewis structure before determining the shape of PF3. He thinks that the shape of PF3 must be trigonal planar because there are three fluorine atoms bonded to the central phosphorus atom. a. Draw the Lewis structure for PF3. b. Was Avogadro's answer for the shape of a PF3 molecule correct? Explain c. Why is it important to draw the Lewis structure for a molecule before identifying the shape of the molecule? 3. Draw the Lewis structure of ozone, O3. Describe why ozone has a bent shape instead of a linear shape.arrow_forward2. Avogadro does not "waste" his time drawing a Lewis structure before determining the shape of PF3. He thinks that the shape of PF3 must be trigonal planar because there are three fluorine atoms bonded to the central phosphorus atom. a. Draw the Lewis structure for PF3. b. Was Avogadro's answer for the shape of a PF3 molecule correct? Explain c. Why is it important to draw the Lewis structure for a molecule before identifying the shape of the molecule?arrow_forward
- Some theories of aging suggest that free radicals cause certain diseases and perhaps aging in general. As you know from the Lewis model, such molecules are not chemically stable and will quickly react with other molecules. According to some theories, free radicals may attack molecules within the cell, such as DNA, changing them and causing cancer or other diseases. Free radicals may also attack molecules on the surfaces of cells, making them appear foreign to the body’s immune system. The immune system then attacks the cells and destroys them, weakening the body. Draw Lewis structures for the free radicals implicated in this theory of aging, which are given here. a. O2 -b. O- c. OH d. CH3OO (unpaired electron on terminal oxygen)arrow_forwardPredicting deviations from ideal bond angles Consider the nitrogen trifluoride (NF3) molecule. What is the central atom? Enter its chemical symbol. How many lone pairs are around the central atom? What is the ideal angle between the nitrogen-fluorine bonds? Compared to the ideal angle, you would expect the actual angle between the nitrogen-fluorine bonds to be ... 0 口。 (choose one) (choose one) about the same bigger smallerarrow_forwardA east.cengagenow.com 103 003 General ChemistryI C OWLV2 | Online teaching and learning resource from Cengage Learning [References] Use the References to access important values if needed for this question. Please note that "geometry" refers to the molecular or ionic geometry. H-N-H A. The Lewis diagram for NH3 is: The electron-pair geometry around the N atom in NH3 is There are lone pair(s) around the central atom, so the geometry of NH3 is 13- :0: B. The Lewis diagram for PO,* is: :0: The electron-pair geometry around the P atom in PO is There are lone pair(s) around the central atom, so the geometry of PO, is Submit Answer Try Another Version 5 item attempts remaining Cengage Learning | Cengage Technical Supportarrow_forward
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