Basic Chemistry (5th Edition)
5th Edition
ISBN: 9780134138046
Author: Karen C. Timberlake
Publisher: PEARSON
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Chapter 7, Problem 9CI
Oxalic acid, a compound found in plants and vegetables such as rhubarb, has a mass percent composition of 26.7% C. 2.24% H. and 71.1% O. Oxalic acid can interfere with respiration and cause kidney or bladder stones. If a large quantity of rhubarb leaves is ingested, the oxalic acid can be toxic. The lethal dose (LD50) in rats for oxalic acid is 375 mg/kg. Rhubarb leaves contain about 0.5% by mass of oxalic acid. (2.7, 7.4, 7.5, 7.6)
Rhubarb leaves are a source of oxalic acid.
- What is the empirical formula of oxalic acid?
- if oxalic acid has an experimental molar mass of 90. g. what is its molecular formula?
- Using the LD50, how many grams of oxalic acid would be toxic for a 160-lb person?
- How many kilograms of rhubarb leaves would the person in part c need to eat to reach the toxic level of oxalic acid?
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Identifying electron-donating and electron-withdrawing effects on benzene
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Molecule
CF3
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electron-rich
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O donating
O withdrawing
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O electron-deficient
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Explanation
Check
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* Hint: Think back to Chem 1 solubility rules.
Follow Up Questions for Part B
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Chapter 7 Solutions
Basic Chemistry (5th Edition)
Ch. 7.1 - What is a mole?Ch. 7.1 - Prob. 7.2QAPCh. 7.1 - Calculate each of the following: number of C atoms...Ch. 7.1 - Calculate each of the following: number of Li...Ch. 7.1 - Calculate each of the following quantities in 2.OO...Ch. 7.1 - Prob. 7.6QAPCh. 7.1 - Prob. 7.7QAPCh. 7.1 - Aluminum sulfate, Al2SO43 , is used in some...Ch. 7.1 - Naproxen is used to treat the pain and...Ch. 7.1 - Benadryl is an over-the-.counter drug used to...
Ch. 7.2 - Calculate the molar mass for each of the...Ch. 7.2 - Prob. 7.12QAPCh. 7.2 - Calculate the molar mass for each of the...Ch. 7.2 - Calculate the molar mass for each of the...Ch. 7.2 - Prob. 7.15QAPCh. 7.2 - Prob. 7.16QAPCh. 7.2 - Prob. 7.17QAPCh. 7.2 - Prob. 7.18QAPCh. 7.2 - Prob. 7.19QAPCh. 7.2 - Calculate the molar mass for each of the...Ch. 7.3 - Calculate the mass, in grams, for each of the...Ch. 7.3 - Calculate the mass, in grams, for each of the...Ch. 7.3 - Calculate the mass, in grams, in 0.150 mol of each...Ch. 7.3 - Calculate the mass, in grams, in 2.28 mol of each...Ch. 7.3 - Prob. 7.25QAPCh. 7.3 - Calculate the number of moles in each of the...Ch. 7.3 - Prob. 7.27QAPCh. 7.3 - Calculate the number of moles in 4.00 g of each of...Ch. 7.3 - Prob. 7.29QAPCh. 7.3 - Calculate the mass, in grams, of N in each of the...Ch. 7.3 - Prob. 7.31QAPCh. 7.3 - Allyl sulfide, C3H52S , gives garlic, onions, and...Ch. 7.3 - Prob. 7.33QAPCh. 7.3 - Prob. 7.34QAPCh. 7.3 - Dinitrogen oxide (or nitrous oxide), N2O , also...Ch. 7.3 - Chloroform, CHCl3 , was formerly used as an...Ch. 7.4 - Calculate the mass percent composition of each of...Ch. 7.4 - Prob. 7.38QAPCh. 7.4 - Prob. 7.39QAPCh. 7.4 - Calculate the mass percent composition of each of...Ch. 7.4 - Prob. 7.41QAPCh. 7.4 - Prob. 7.42QAPCh. 7.5 - Prob. 7.43QAPCh. 7.5 - Prob. 7.44QAPCh. 7.5 - Prob. 7.45QAPCh. 7.5 - Prob. 7.46QAPCh. 7.6 - Prob. 7.47QAPCh. 7.6 - Prob. 7.48QAPCh. 7.6 - Prob. 7.49QAPCh. 7.6 - Prob. 7.50QAPCh. 7.6 - Prob. 7.51QAPCh. 7.6 - Prob. 7.52QAPCh. 7.6 - Prob. 7.53QAPCh. 7.6 - Prob. 7.54QAPCh. 7.6 - Prob. 7.55QAPCh. 7.6 - Prob. 7.56QAPCh. 7.6 - Prob. 7.57QAPCh. 7.6 - 7.58 Adenine, a nitrogen-containing compound found...Ch. 7 - Prob. 7.59FUCh. 7 - Prob. 7.60FUCh. 7 - A dandruff shampoo contains dipyrithione,...Ch. 7 - Prob. 7.62UTCCh. 7 - Prob. 7.63UTCCh. 7 - Prob. 7.64UTCCh. 7 - Prob. 7.65AQAPCh. 7 - Prob. 7.66AQAPCh. 7 - Calculate the mass, in grams, of O in each of the...Ch. 7 - 7.68 Calculate the mass, in gram, of Cu in each of...Ch. 7 - Prob. 7.69AQAPCh. 7 - Prob. 7.70AQAPCh. 7 - Prob. 7.71AQAPCh. 7 - Prob. 7.72AQAPCh. 7 - Prob. 7.73AQAPCh. 7 - Prob. 7.74AQAPCh. 7 - Prob. 7.75AQAPCh. 7 - Prob. 7.76AQAPCh. 7 - Prob. 7.77AQAPCh. 7 - 7.78 Write the empirical formula for each of the...Ch. 7 - Calculate the empirical formula for each of the...Ch. 7 - Prob. 7.80AQAPCh. 7 - Prob. 7.81AQAPCh. 7 - Prob. 7.82AQAPCh. 7 - Prob. 7.83AQAPCh. 7 - A compound is 70.6% Hg, 12.5% CI, and 16.9% O. If...Ch. 7 - Prob. 7.85AQAPCh. 7 - Prob. 7.86AQAPCh. 7 - A toothpaste contains 0.240% by mass sodium...Ch. 7 - Prob. 7.88CQCh. 7 - Prob. 7.89CQCh. 7 - Prob. 7.90CQCh. 7 - Prob. 7CICh. 7 - Prob. 8CICh. 7 - Oxalic acid, a compound found in plants and...Ch. 7 - The active ingredient in Tums is calcium...Ch. 7 - Prob. 11CI
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- Rank each of the following substituted benzene molecules in order of which will react fastest (1) to slowest (4) by electrophilic aromatic substitution. OCH 3 (Choose one) OH (Choose one) Br (Choose one) Explanation Check NO2 (Choose one) © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Aarrow_forwardFor each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene. Molecule Inductive Effects O donating O withdrawing O no inductive effects Resonance Effects Overall Electron-Density ○ donating ○ withdrawing O no resonance effects O electron-rich O electron-deficient O similar to benzene Cl O donating O withdrawing ○ donating ○ withdrawing O no inductive effects O no resonance effects O Explanation Check O electron-rich O electron-deficient similar to benzene X © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessarrow_forwardIdentifying electron-donating and For each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene. Molecule Inductive Effects NH2 ○ donating NO2 Explanation Check withdrawing no inductive effects Resonance Effects Overall Electron-Density ○ donating O withdrawing O no resonance effects O donating O withdrawing O donating withdrawing O no inductive effects Ono resonance effects O electron-rich electron-deficient O similar to benzene O electron-rich O electron-deficient O similar to benzene olo 18 Ar 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibilityarrow_forward
- Rank each of the following substituted benzene molecules in order of which will react fastest (1) to slowest (4) by electrophilic aromatic substitution. Explanation Check Х (Choose one) OH (Choose one) OCH3 (Choose one) OH (Choose one) © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Centerarrow_forwardAssign R or S to all the chiral centers in each compound drawn below porat bg 9 Br Brarrow_forwarddescrive the energy levels of an atom and howan electron moces between themarrow_forward
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