The gas inside a cylinder expands against a constant external pressure of 0.906 atm from a volume of 3.37 L to a volume of 14.70 L. In doing so, it turns a paddle immersed in 0.895 L of liquid benzene (C,H6). Calculate the temperature rise of the liquid, assuming no loss of heat to the surroundings or frictional losses in the mechanism. Take the density of liquid C,H, to be 0.879 g cm³ and its specific heat to be 1.74 J °C- g. Hints: The expansion work done by the gas is given by: w = -PexternalAV and 1 L atm 101.325 J. ДТ 3 °C

The gas inside a cylinder expands against a constant external pressure of 0.906 atm from a volume of 3.37 L to a volume of 14.70 L. In doing so, it turns a paddle immersed in 0.895 L of liquid benzene (C,H6). Calculate the temperature rise of the liquid, assuming no loss of heat to the surroundings or frictional losses in the mechanism. Take the density of liquid C,H, to be 0.879 g cm³ and its specific heat to be 1.74 J °C- g. Hints: The expansion work done by the gas is given by: w = -PexternalAV and 1 L atm 101.325 J. ДТ 3 °C

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) From previous experiments, this chemical reaction is known to absorb 359. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 104. kJ of heat flows out of the system during the reaction. exothermic Is the reaction exothermic or endothermic? х10 endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither does work Does the gas mixture do work, or is work done on it? work is done on it neither How much work is done on (or by) the gas mixture? Be sure your answer has the correct number of significant digits. ||kJ
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