ORG CHEM CONNECT CARD
6th Edition
ISBN: 9781264860746
Author: SMITH
Publisher: MCG
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Chapter 21.3, Problem 5P
Interpretation Introduction
(a)
Interpretation: The additional resonance structures for the given anion are to be drawn.
Concept introduction: The method by which overall delocalization of electrons can be described in a particular molecule is known as resonance.
Interpretation Introduction
(b)
Interpretation: The additional resonance structures for the given anion are to be drawn.
Concept introduction: The method by which overall delocalization of electrons can be described in a particular molecule is known as resonance.
Interpretation Introduction
(c)
Interpretation: The additional resonance structures for the given anion are to be drawn.
Concept introduction: The method by which overall delocalization of electrons can be described in a particular molecule is known as resonance.
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LABORATORY REPORT FORM
Part I. Determination of the Formula of a Known Hydrate
1. Mass of empty evaporating dish
3. Mass of hydrate
Using subtraction
or mass by difference,
find the mass of
the hydrate
76.96
-75.40
75.40g
76.968
1.568
01.56
76.90 g
2. Mass of evaporating dish + hydrate
4. Mass of evaporating dish + hydrate (after heating)
First 76.98 g
Third 76.66g
Second
Fourth (if necessary) 76.60g
5. Mass of anhydrate
6. Mass of water lost by the hydrate
7. Percent of water of hydration
(Show Calculations)
8. Moles of water
(Show Calculations)
mol
mass of water
=
MM of water (g/m)
9. Moles of anhydrate
(Show Calculations)
10. Ratio of moles of water to moles of anhydrate
11 F(Show Calculations)
11. Formula of hydrate
- Mass of water (g) x 100
% water hydration
g
g
%
Mass of hydrate (9) x IC
% = (Mass of hydrate- mass of an)
mass of hydrate (g)
% = (1.569-
× 100=
mol
1.569
mol Mol Mass of
anhydrate/MM
of anhydrate
12. What was the color of the hydrate?
blue
What was the color of the…
compared t-critical with t-calculated and 95% confidence interval to answer this question
Comparing two means. Horvat and co-workers used atomic absorption spectroscopy to determine the concentration of Hg in coal fly ash. Of particular interest to the authors was developing an appropriate procedure for digesting samples and releasing the Hg for analysis. As part of their study they tested several reagents for digesting samples. Their results using HNO3 and using a 1+3 mixture of HNO3 and HCl are shown here. All concentrations are given as ppb Hg sample.
HNO3: 161, 165, 160, 167, 166
1+3 HNO3–HCl: 159, 145, 140, 147, 143, 156
Determine whether there is a significant difference between these methods at the 95% confidence interval.
Chapter 21 Solutions
ORG CHEM CONNECT CARD
Ch. 21.2 - Problem 23.1 Draw the enol or keto tautomer(s) of...Ch. 21.2 - Problem 23.3 When phenylacetaldehyde is dissolved...Ch. 21.3 - Prob. 5PCh. 21.3 - Problem 23.5 Which bonds in the following...Ch. 21.3 - Prob. 7PCh. 21.3 - Prob. 8PCh. 21.3 - Prob. 9PCh. 21.4 - Prob. 10PCh. 21.5 - Prob. 11PCh. 21.7 - Problem 23.11 Draw the products of each...
Ch. 21.7 - Problem 23.12 Draw the products of each reaction....Ch. 21.7 - Prob. 14PCh. 21.7 - Prob. 15PCh. 21.8 - Prob. 16PCh. 21.8 - Prob. 17PCh. 21.8 - Prob. 18PCh. 21.8 - Problem 23.18 How can pentan-2-one be converted...Ch. 21.8 - Problem 23.19 Identify A, B, and C, intermediates...Ch. 21.9 - Problem 23.20 Which of the following compounds...Ch. 21.9 - Problem 23.21 Draw the products of each...Ch. 21.9 - Prob. 23PCh. 21.9 - Prob. 24PCh. 21.9 - Prob. 25PCh. 21.10 - Prob. 26PCh. 21.10 - Prob. 27PCh. 21.10 - Prob. 28PCh. 21.10 - Prob. 29PCh. 21 - 23.29 Draw enol tautomer(s) for each compound....Ch. 21 - 22.30 The cis ketone A is isomerized to a trans...Ch. 21 - 23.31 Draw enol tautomer(s) for each compound.
...Ch. 21 - Prob. 33PCh. 21 - Prob. 34PCh. 21 - 23.35 Rank the labeled protons in each compound in...Ch. 21 - Prob. 36PCh. 21 - Prob. 37PCh. 21 - 23.38 Acyclovir is an effective antiviral agent...Ch. 21 - 23.39 Explain why forms two different alkylation...Ch. 21 - Prob. 40PCh. 21 - 23.42 Draw a stepwise mechanism for the following...Ch. 21 - Prob. 42PCh. 21 - Prob. 43PCh. 21 - 23.45 Devise a synthesis of valproic acid , a...Ch. 21 - Prob. 57PCh. 21 - 23.57 Draw a stepwise mechanism showing how two...Ch. 21 - 23.58 Draw a stepwise mechanism for the following...Ch. 21 - Prob. 65PCh. 21 - 23.66 Synthesize (Z)-hept-5-en-2-one from ethyl...
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- Comparison of experimental data to “known” value. Monna and co-workers used radioactive isotopes to date sediments from lakes and estuaries.21 To verify this method they analyzed a 208Po standard known to have an activity of 77.5 decays/min, obtaining the following results. 77.09, 75.37, 72.42, 76.84, 77.84, 76.69, 78.03, 74.96, 77.54, 76.09, 81.12, 75.75 Do the results differ from the expected results at the 95% confidence interval?arrow_forwardExplain the difference between the propagated uncertainty and the standard deviation. Which number would you use to describe the uncertainty in the measurement? if the standard deviation is 0.01 and the propagated uncertainty is 0.03arrow_forwardPropagation of uncertainty. Find the absolute and percent relative uncertainty assuming the ±-values are random error. 7.65±0.04 + 5.28±0.02 – 1.12±0.01 85.6±0.9 × 50.2±0.7 ÷ 13.8±0.5 [4.88±0.07 + 3.22±0.05] / 1.53±0.02arrow_forward
- Explain the difference between the propagated uncertainty and the standard deviation. Which number would you use to describe the uncertainty in the measurement?arrow_forwardCircle the compound in each pair where the indicated bond vibrates at higher frequency. WHY IS THIS? Provide thorough explanation to tie topic.arrow_forwardHow can you distinguish between each pair of compounds below using IR? Cite a bond and frequency that can be used to distinguish. Provide thorough steps and explanation.arrow_forward
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- Q2: Draw the molecules based on the provided nomenclatures below: (2R,3S)-2-chloro-3-methylpentane: (2S, 2R)-2-hydroxyl-3,6-dimethylheptane:arrow_forwardQ3: Describes the relationship (identical, constitutional isomers, enantiomers or diastereomers) of each pair of compounds below. ག H CH3 OH OH CH3 H3C OH OH OH ////////// C CH3 CH3 CH3 CH3 H3C CH 3 C/III..... Physics & Astronomy www.physics.northweste COOH H нош..... H 2 OH HO CH3 HOOC H CH3 CH3 CH3 Br. H H Br and H H H Harrow_forwardQ1: For each molecule, assign each stereocenter as R or S. Circle the meso compounds. Label each compound as chiral or achiral. OH HO CI Br H CI CI Br CI CI Xf x f g Br D OH Br Br H₂N R. IN Ill I -N S OMe D II H CO₂H 1/111 DuckDuckGarrow_forward
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