Question

Must include sign b) 10. A reaction known to release 1.78kJ of heat takes place in a calorimeter containing 0.100L of solution and the temperature rose by 3.65°C. The calorimeter was then rinsed out and emptied. To the empty calorimeter was placed a small piece of calcium carbonate and 0.100L of dilute HCI was poured over it in the same calorimeter). The temperature of the calorimeter then rose by 3.57°C. What is the heat, q, in kJ released by the reaction? Remember to include the correct sign in your answer. 1pt

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Answer 1

10) Heat released by reaction - (heat absorbed by soluant heat absorbed by calorimeteus anon - - Caserta con ter Same - Assume density and heat capacity of solution as wover. So mson 2o-looL x 103 m x 1g = -)-78 kJ 2 - Ca atau otud = Os cal -8 ILI 8 (msox & Sou xor & Carora) A SUU 997 > 10X 1-3 13 20 C100 g x 4.1845 x 365°C tem x3250) 2 1.78x10 - 1527-165 3-65°C 2 69-27 5/06 ~ 69-3 loc For second reactionz axn 2 2 - Casar tacan) - (100gx4-1843 * 3:53 + 69.35 x3-853) °C - = – 17405 x 103 kJ 2 E1-74.13 in 2 cases (As we take we can same volume of solutions use au C XOT) Ca = -1721 3.65°C