CHEM 1040 Study Guide - Final Guide: Isothermal Process, Heat Capacity, Joule

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indigocamel888

11 Oct 2018

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Document Summary

50. 0 ml dilute agno3 is added to a solution with oh ions in a coffee cup calorimeter. Ag2o precipitates and the temperature of the liquid goes from 23. 78 to 25. 19 c. Assume that the mixture has the same specific heat as water. Solution: qsurroundings = mass specific heat change in temp qsurroundings = 150. g 4. 184 j/g c (25. 19 - 23. 78 c) qsurroundings = 885 joules. Rxn exothermic (t of mixture rose; rxn released heat to its surroundings). A 48. 9 sample of metal at 95. 72 c is added to 43. 58 g water at 23. 84 c. The final temperature of the (metal + water) is 28. 37 c. Heat associated with metal cooling = heat associated with water warming. (massmetal specific heatmetal t = massh2o specific heath2o t. (48. 9 g cs (28. 37 - 95. 72) = 43. 58 g 4. 184 j/g c (28. 37 - 23. 84) When ice at 0 c melts to liquid h2o, it absorbs 334 j per gram.

Related Questions

1. A 88.3 g sample of metal at 95.24 ^oCis added to 35.10 g of water that is initially at 17.27^oC.The final temperature of both the water and the metal is29.20^oC.The specific heat of water is 4.184 J/(g^oC).Calculate the specific heat of the metal.

2. A 56.4 g sample of Al at 93.3 ^oCis added to 173.7 g of water that is initially at 27.0^oC.The specific heat of Al and water are 0.90 J/(g^oC)and 4.184 J/(g^oC),respectively. Calculate the equilibrium temperature.

A 66 mL solution of a dilute AgNO₃solution is added to 88 mL of a base solution in a coffee-cupcalorimeter. As AgOH (s) precipitates, the temperature of thesolution increases from 23.35 ^oCto 25.65 ^oC.Assuming the mixture has the same specific heat(4.184J/g^oC)and density (1.00 g/cm³or 1.00 g/mL)as water, calculate the heat (in J) transferred to thesurroundings, q_surr.