Questions tagged 'Enthalpy Change'
4 questions
Hess’ Law Question, Calculating Enthalpy Change?
I have a question regarding Hess's Law and calculating enthalpy change. I need to calculate the standard enthalpy change for the following reaction: 2 HCl (g) + F2 (g) → 2 HF (l) + Cl2 (g) Given th...
The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed/re?
1) The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed or released when 9.00 g of steam condenses to liquid water at 100°C. 2) Calculate the tot...
n a coffee cup calorimeter, 100.0 mL of 1.0M NaOH and 100.0 mL of 1.0M HCl are mixed. Both solutions were originally at 24.6 degrees
In a coffee cup calorimeter, 100.0 mL of 1.0 M NaOH is mixed with 100.0 mL of 1.0 M HCl. Both solutions were initially at 24.6 degrees Celsius. After the reaction, the final temperature of the mixture...
Oct 26, 2024
Which statement is true if the hrxn of a reaction is positive?
What can be concluded about a reaction if the enthalpy change (ΔH_rxn) is positive?