Explanation Limiting reactant: The reactant that limits the amount of product is called the limiting reactant. It decides the maximum quantity of a product in the reaction. The reactant that produces a lesser amount of product is the limiting reactant. Theoretical yield: The calculated yield based on the amount of limiting reactant is called the theoretical yield. Thus, this gives the exact amount of product that should come out as a result of a chemical reaction . Percent yield: The percentage of theoretical yield that actually results from a chemical reaction is called the percent yield. The actual yield may vary from the theoretical yield as some product may not be formed or it may convert to some other state that is omitted from calculation. Thus, percent yield = ( a c t u a l y i e l d t h e o r e t i c a l y i e l d ) × 100 Molar mass of Mg = 24 Molar mass of O = 16 Formula molar mass = m

Chemistry: A Molecular Approach, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (4th Edition)

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Chapter 4, Problem 50E

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To determine: The limiting reactant, theoretical yield of MgO, and percent yield for the reaction.

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Chapter 4, Problem 49E

Chapter 4, Problem 51E

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Part I. a) Elucidate the structure of compound A using the following information. • mass spectrum: m+ = 102, m/2=57 312=29 • IR spectrum: 1002.5 % TRANSMITTANCE Ngg 50 40 30 20 90 80 70 60 MICRONS 5 8 9 10 12 13 14 15 16 19 1740 cm M 10 0 4000 3600 3200 2800 2400 2000 1800 1600 13 • CNMR 'H -NMR Peak 8 ppm (H) Integration multiplicity a 1.5 (3H) triplet b 1.3 1.5 (3H) triplet C 2.3 1 (2H) quartet d 4.1 1 (2H) quartet & ppm (c) 10 15 28 60 177 (C=0) b) Elucidate the structure of compound B using the following information 13C/DEPT NMR 150.9 MHz IIL 1400 WAVENUMBERS (CM-1) DEPT-90 DEPT-135 85 80 75 70 65 60 55 50 45 40 35 30 25 20 ppm 1200 1000 800 600 400

• Part II. a) Elucidate The structure of compound c w/ molecular formula C10 11202 and the following data below: • IR spectra % TRANSMITTANCE 1002.5 90 80 70 60 50 40 30 20 10 0 4000 3600 3200 2800 2400 2000 1800 1600 • Information from 'HAMR MICRONS 8 9 10 11 14 15 16 19 25 1400 WAVENUMBERS (CM-1) 1200 1000 800 600 400 peak 8 ppm Integration multiplicity a 2.1 1.5 (3H) Singlet b 3.6 1 (2H) singlet с 3.8 1.5 (3H) Singlet d 6.8 1(2H) doublet 7.1 1(2H) doublet Information from 13C-nmR Normal carbon 29ppm Dept 135 Dept -90 + NO peak NO peak 50 ppm 55 ppm + NO peak 114 ppm t 126 ppm No peak NO peak 130 ppm t + 159 ppm No peak NO peak 207 ppm по реак NO peak

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Chapter 4 Solutions

Chemistry: A Molecular Approach, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (4th Edition)

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The limiting reactant, theoretical yield of M g O , and percent yield for the reaction.

To determine: The limiting reactant, theoretical yield of MgO, and percent yield for the reaction.

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Chapter 4 Solutions