Question

Name Section Advance Study Assignment: Heat Effects and Calorimetry 1. A metal ple w 2 wd a temperature of placed in 35 of weiss calorimeter 25 C. Alquilibrium t emperature of the wwe metal ww3 . C. What was t he c. Taking the specific heat of water to be 4.18 using Fg. 3 'Calc h e specific heat of them _1 d. What is the approximate atomic mass of the metal? (Use Eq. 4.) 2. When 2.0 g of NaOH were dissolved in 53.0 g water in a calorimeter at 240c, the temperature of the solution went up to 33.7°C. a. Is this solution reaction exothermie? Why? b. Calculate Cipo using Eq. 1. c. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). d. Find AH for the solution of 1,00 g NaOH in water e. Find AH for the solution of one mole NaOH in water, 3/mol Given that NaOH exists as Na' and OH ions in solution, write the equation for the reaction that occurs when NaOH is dissolved in water. & Using enthalpies of formation as given in thermodynamic tables, calculate AH for the reaction in Part and compare your answer with the result you obtained in Parte.

Answer 1

63.0-202)c k3.0-100-0)= -67°c &orthe water Metal At for the 0THO MH2020 t Mmetal Cmetrl 4Tmetal 4.5- 2 X Cmetn X6 38.6 X 4.18 x7.8+ 38.6 X4.18 X .8 Cmetal = 0.91557073 gc cobnlt) Mass of metal d APPYonimn ate atomie = 58-9339lmol 2019-11-20 02:59