If the temperature rises, the reaction is exothermic. That means should be negative . Many students give a positive number because they calculate q_water (positive) and stop there.
0.25 g of ethanol (C₂H₅OH) is burned to heat 200 g of water from 21.0°C to 35.5°C. Calculate the enthalpy of combustion of ethanol in kJ/mol. (Assume no heat loss, c=4.18 J/g°C, Molar mass ethanol = 46.0 g/mol) calorimetry worksheet 2 answers chemsheets
You can find full worked solutions and detailed PDF booklets for related topics on platforms like Scribd or Studocu . These typically cover: : Calorimetry 1 Basics AS 1048 : Calorimetry 2 Advanced Calculations AS 1053 : Hess's Law Mixtures If you'd like, I can help you: Walk through a specific calculation step-by-step If the temperature rises, the reaction is exothermic
: Most Chemsheets answers are rounded to 3 significant figures. These typically cover: : Calorimetry 1 Basics AS
For reactions, the heat transferred can also be related to the number of moles of reactants and the molar enthalpy change (ΔH) of the reaction: