Part B.3. The chemist used a thermometer that was miscalibrated by 2 o C over th

Question

Part B.3. The chemist used a thermometer that was miscalibrated by 2oC over the entire thermometer scale. Will this factory error cause the reported energy of neutralization, (delta) Hn, to be higher, lower, or unaffected? Explain.

Part C. The dissolution of ammonium nitrate, NH4NO3, in water is an endothermic process. Since the calorimeter is not a perfect insulator, will the enthalpy of solution, (delta) Hs, for ammonium nitrate be reported as too high or too low if this heat change is ignored? Explain.

Explanation / Answer

Part B.3. uneffected because Since the volume is kept constant and when the concentration of the acid increases, the acid particles also increase. So the concentration will be directly proportional to the temperature change. Because neutralization is an exothermic reaction, during the reaction, the temperature will increase until the point of neutralization (at which point the temperature is at its highest), and after this point, the temperature will start to decrease.so effect of temperature nullified.

Part C.the enthalpy of solution, (delta) Hs, for ammonium nitrate will be reported as too high beacuse if the enthalpy of solution is very high then the loss of heat (heat change due calorimeter) negligible so we can ignore it

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