Question

QUESTION 6 You dissolve 9.6 g of CuSO4 in 50.00 mL of water in a coffee cup calorimeter and measure a temperature rise of 10.2 °C. Calculate the enthalpy of dissolution for CuSO4 Report your answer in kl/mol, enter it to one decimal place. If your enthalpy change is positive, do not enter a "+" in front of your answer; if it is negative, however, make sure you include a "-" sign at the beginning of the number.

Answer 1

2 Cliven volume of wates = 50ml. Considering density = 1g1 ml mass of water sog. Tenperature rise = 10.2°C specific heat of water = 40184 J Ocg Since temperature of so it nuest be i reaction , so heat - be negative. water rises an exothermic of dissolution must

Assuming equal Tamific heat of solution is spec to specific heat of watch Q2 mSAI Q = (59.6g) ( 40 18 4 7 x 10.2% Q = 2543.5 J 9.6 g Cusoy releases i Heat released 2543.5 J by I nol heat. of cusou An= Molar mass of cusou x Mass of Cusoy sample & =) AH = 160g Imol x 25405 J 9.6g > since so Drz 4204 kJ/mol. it is exothermic. An= -4204 kJ/mol
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