
Concept explainers
(a)
Interpretation:
The shape of a molecule whose central atom is surrounded by two regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps:
- First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
- The sum obtained above gives us idea about the electronic geometry in a molecule. For example, if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
- Now for molecular geometry we have to consider the number of lone pair of electrons.
- The molecular geometry depends upon the repulsion order between electron pairs which is Bond-bond < lone pair −bond pair < lone pair-lone pair.
(b)
Interpretation:
The shape of a molecule whose central atom is surrounded by three regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps.
- First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
- The sum obtained above gives us idea about the electronic geometry in a molecule. For example if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
- Now for molecular geometry we have to consider the number of lone pair of electrons.
- The molecular geometry depends upon the repulsion order between electron pairs which is Bond-bond < lone pair −bond pair < lone pair-lone pair.
(b)
Interpretation:
The shape of a molecule whose central atom is surrounded by four regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps.
- First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
- The sum obtained above gives us idea about the electronic geometry in a molecule. For example if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
- Now for molecular geometry we have to consider the number of lone pair of electrons.
- The molecular geometry depends upon the repulsion order between electron pairs which is Bond-bond < lone pair −bond pair < lone pair-lone pair.

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Chapter 3 Solutions
Introduction To General, Organic, And Biochemistry
- QUESTION: Find the standard deviation for the 4 different groups 5.298 3.977 223.4 148.7 5.38 4.24 353.7 278.2 5.033 4.044 334.6 268.7 4.706 3.621 305.6 234.4 4.816 3.728 340.0 262.7 4.828 4.496 304.3 283.2 4.993 3.865 244.7 143.6 STDEV = STDEV = STDEV = STDEV =arrow_forwardQUESTION: Fill in the answers in the empty green boxes regarding 'Question 5: Calculating standard error of regression' *The images of the data showing 'coefficients for the standard curve' have been providedarrow_forwardUsing the Nernst equation to calculate nonstandard cell voltage Try Again Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2+ 2+ Sn²+ Ba(s) (aq) + Ba (s) Sn (s) + Ba²+ (aq) →>> Suppose the cell is prepared with 6.10 M Sn 2+ 2+ in one half-cell and 6.62 M Ba in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits. 1.71 V ☐ x10 ☑ 5 0/5 ? 00. 18 Ararrow_forward
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- The following is two groups (Regular tomato sauce & Salt Reduced Tomato Sauce) of data recorded by a team analysising salt content in tomato sauce using the MOHR titration method: Regular Tomato Sauce Salt Reduced Tomato Sauce 223.4 148.7 353.7 278.2 334.6 268.7 305.6 234.4 340.0 262.7 304.3 283.2 244.7 143.6 QUESTION: For both groups of data calculate the answers attached in the image.arrow_forwardThe following is a two groups (Regular tomato sauce & Salt Reduced Tomato Sauce) of data recorded by a team analysising salt content in tomato sauce using the MOHR titration method: Regular Tomato Sauce Salt Reduced Tomato Sauce 340.0mmol/L 262.7mmol/L QUESTION: For both groups (Regular & Salt Reduced tomato sauce) of data provide answers to the following calculations below: 1. Standard Deviation (Sx) 2. T Values (t0.05,4) 3. 95% Confidence Interval (mmol/L) 4. [Na+] (mg/100 mL) 5. 95% Confidence Interval (mg/100 mL)arrow_forwardIf we have leucine (2-amino-4-methylpentanoic acid), alanine (2-aminopropanoic acid) and phenylalanine (2-amino-3-phenylpropanoic acid), indicate the tripeptides that can be formed (use the abbreviated symbols Leu., Ala and Phe).arrow_forward
- Briefly state why trifluoroacetic acid is more acidic than acetic acid.arrow_forwardExplain why acid chlorides are more reactive than amides in reactions with nucleophiles.arrow_forwardCalculating the pH of a weak base titrated with a strong acid An analytical chemist is titrating 101.7 mL of a 0.3500M solution of piperidine (C5H10NH) with a 0.05700M solution of HClO4. The pK of piperidine is 2.89. Calculate the pH of the base solution after the chemist has added 682.9 mL of the HClO solution to it. 4 Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HClO solution added. 4 Round your answer to 2 decimal places. pH = .11 00. 18 Ararrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
