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103. In acetic acid vapor, some molecules exist as monomers and some as dimers (see Figure 12-9). If the density of the vapor at 350 K and 1 atm is 3.23 g>L, what percentage of the molecules must exist as dimers? Would you expect this percent to increase or decrease with temperature?

103. In acetic acid vapor, some molecules exist as monomers and some as dimers (see Figure 12-9). If the density of the vapor at 350 K and 1 atm is 3.23 g>L, what percentage of the molecules must exist as dimers? Would you expect this percent to increase or decrease with temperature?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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103. In acetic acid vapor, some molecules exist as monomers and some as dimers (see Figure 12-9). If the density of the vapor at 350 K and 1 atm is 3.23 g>L, what percentage of the molecules must exist as dimers? Would you expect this percent to increase or decrease with temperature? 106. A chemistry handbook lists the following equation for the vapor pressure of NH3112 as a function of temperature. What is the normal boiling point of NH3112? log10 P1mmHg2 = 9.95028 - 0.003863T - 1473.17 T 104. A 685 mL sample of Hg(1) at 20°C is added to a large quantity of liquid N kept at its boiling point in a thermally insulated container. What mass of N2 (I) is vaporized as the Hg is brought to the temperature of the liquid N2? For the specific heat of Hg(1) from 20 to -39 °C use 0.138 J g-1 °C-1, and for Hg(s) from -39 to -196 °C, 0.126 J g-1°C-1. The density of Hg(1) is 13.6g>mL, its melting point is -39°C, and its enthalpy of fusion is 2.30 kJ mol-1. The boiling point of N2(1) is -196 °C, and its ¢vapH is 5.58 kJ mol-1
Transcribed Image Text:103. In acetic acid vapor, some molecules exist as monomers and some as dimers (see Figure 12-9). If the density of the vapor at 350 K and 1 atm is 3.23 g>L, what percentage of the molecules must exist as dimers? Would you expect this percent to increase or decrease with temperature? 106. A chemistry handbook lists the following equation for the vapor pressure of NH3112 as a function of temperature. What is the normal boiling point of NH3112? log10 P1mmHg2 = 9.95028 - 0.003863T - 1473.17 T 104. A 685 mL sample of Hg(1) at 20°C is added to a large quantity of liquid N kept at its boiling point in a thermally insulated container. What mass of N2 (I) is vaporized as the Hg is brought to the temperature of the liquid N2? For the specific heat of Hg(1) from 20 to -39 °C use 0.138 J g-1 °C-1, and for Hg(s) from -39 to -196 °C, 0.126 J g-1°C-1. The density of Hg(1) is 13.6g>mL, its melting point is -39°C, and its enthalpy of fusion is 2.30 kJ mol-1. The boiling point of N2(1) is -196 °C, and its ¢vapH is 5.58 kJ mol-1
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