Unformatted text preview: experimentation error. As the experiment was performed in a closed thermos, the main source of error arises from the escape of heat from the thermos into the environment upon opening the thermos to add either the magnesium or the magnesium oxide (depending on the reaction). After adding the individual heats of reaction and adding them with water’s literature value for heat of formation, the measured heat of formation of magnesium oxide was -639 kJ/mol compared to the true value of -602 kJ/mol. The relative error of accuracy was 6.14%, meaning the accuracy could have been better, but the measured value was not too far off from the true value. With more careful experimental procedure, the accuracy could be greatly improved. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name Liz Zharovsky Bench C19 Lab day and section Tuesday- 2 TA Ramyaa Mathialagan Partner Siqi Liu Title: Heat of Formation...
View Full Document
- Fall '06
- Chemistry, Siqi Liu, Liz Zharovsky