Answer: b) Bomb calorimeter
Where:
Always check if the question asks for Joules or kilojoules. calorimetry worksheet 2 answers chemsheets
The general approach for these problems involves three steps: Calculate heat energy ( Calculate the number of moles ( Calculate enthalpy change ( Mass of Fuel Mass of Water ΔTcap delta cap T 1 -1650 kJ mol⁻¹ 2 -3710 kJ mol⁻¹ 3 Propan-1-ol -1900 kJ mol⁻¹ Worked Example: Question 2 (Hexane)
Assume the density of the solution is the same as water ( Answer: b) Bomb calorimeter Where: Always check if
A common question in Chemsheets worksheets asks why experimental values are lower than theoretical values. Common reasons include: to the surroundings. Incomplete combustion (indicated by soot on the beaker). Non-standard conditions (pressure and temperature). Evaporation of the fuel from the wick. 5. Tips for Success
(Mass): The mass of the substance being heated or cooled (usually water in the calorimeter), measured in grams (g). Incomplete combustion (indicated by soot on the beaker)
While this equation looks simple, Chemsheets challenges you to apply it with precision and pay attention to unit conversions.
Answer: Q = mcΔT
q_cal = C_cal × ΔT = 1.50 kJ/°C × 3.8°C = 5.70 kJ