(a)
Interpretation:
Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.
Concept introduction:
Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.
Example:
After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.
Stereochemistry conversions in chair conformation are shown below.
Substituent position | cis | trans |
1,2 position | (a,e) or (e,a) | (a,a) or (e,e) |
1,3 position | (a,a) or (e,e) | (a,e) or (e,a) |
1,4 position | (a,e) or (e,a) | (a,a) or (e,e) |
(b)
Interpretation:
Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.
Concept introduction:
Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.
Example:
After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.
Stereochemistry conversions in chair conformation are shown below.
Substituent position | cis | trans |
1,2 position | (a,e) or (e,a) | (a,a) or (e,e) |
1,3 position | (a,a) or (e,e) | (a,e) or (e,a) |
1,4 position | (a,e) or (e,a) | (a,a) or (e,e) |
(c)
Interpretation:
Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.
Concept introduction:
Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.
Example:
After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.
Stereochemistry conversions in chair conformation are shown below.
Substituent position | cis | trans |
1,2 position | (a,e) or (e,a) | (a,a) or (e,e) |
1,3 position | (a,a) or (e,e) | (a,e) or (e,a) |
1,4 position | (a,e) or (e,a) | (a,a) or (e,e) |
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Chapter 4 Solutions
ORGANIC CHEMISTRYPKGDRL+MLCRL MDL
- Part C IN H N. Br₂ (2 equiv.) AlBr3 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and + e (×) H± 12D T EXP. L CONT. דarrow_forward9. OA. Rank the expected boiling points of the compounds shown below from highest to lowest. Place your answer appropriately in the box. Only the answer in the box will be graded. (3) points) OH OH بر بد بدید 2 3arrow_forwardThere is an instrument in Johnson 334 that measures total-reflectance x-ray fluorescence (TXRF) to do elemental analysis (i.e., determine what elements are present in a sample). A researcher is preparing a to measure calcium content in a series of well water samples by TXRF with an internal standard of vanadium (atomic symbol: V). She has prepared a series of standard solutions to ensure a linear instrument response over the expected Ca concentration range of 40-80 ppm. The concentrations of Ca and V (ppm) and the instrument response (peak area, arbitrary units) are shown below. Also included is a sample spectrum. Equation 1 describes the response factor, K, relating the analyte signal (SA) and the standard signal (SIS) to their respective concentrations (CA and CIS). Ca, ppm V, ppm SCa, arb. units SV, arb. units 20.0 10.0 14375.11 14261.02 40.0 10.0 36182.15 17997.10 60.0 10.0 39275.74 12988.01 80.0 10.0 57530.75 14268.54 100.0…arrow_forward
- A mixture of 0.568 M H₂O, 0.438 M Cl₂O, and 0.710 M HClO are enclosed in a vessel at 25 °C. H₂O(g) + C₁₂O(g) = 2 HOCl(g) K = 0.0900 at 25°C с Calculate the equilibrium concentrations of each gas at 25 °C. [H₂O]= [C₁₂O]= [HOCI]= M Σ Marrow_forwardWhat units (if any) does the response factor (K) have? Does the response factor (K) depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)?arrow_forwardProvide the structure, circle or draw, of the monomeric unit found in the biological polymeric materials given below. HO OH amylose OH OH 행 3 HO cellulose OH OH OH Ho HOarrow_forward
- OA. For the structure shown, rank the bond lengths (labeled a, b and c) from shortest to longest. Place your answer in the box. Only the answer in the box will be graded. (2 points) H -CH3 THe b Нarrow_forwardDon't used hand raitingarrow_forwardQuizzes - Gen Organic & Biological Che... ☆ myd21.lcc.edu + O G screenshot on mac - Google Search savings hulu youtube google disney+ HBO zlib Homework Hel...s | bartleby cell bio book Yuzu Reader: Chemistry G periodic table - Google Search b Home | bartleby 0:33:26 remaining CHEM 120 Chapter 5_Quiz 3 Page 1: 1 > 2 > 3 > 6 ¦ 5 > 4 > 7 ¦ 1 1 10 8 ¦ 9 a ¦ -- Quiz Information silicon-27 A doctor gives a patient 0.01 mC i of beta radiation. How many beta particles would the patient receive in I minute? (1 Ci = 3.7 x 10 10 d/s) Question 5 (1 point) Saved Listen 2.22 x 107 222 x 108 3.7 x 108 2.22 x 108 none of the above Question 6 (1 point) Listen The recommended dosage of 1-131 for a test is 4.2 μCi per kg of body mass. How many millicuries should be given to a 55 kg patient? (1 mCi = 1000 μСi)? 230 mCiarrow_forward
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