تحصيلي 1 enthalpy

Change in enthalpy that accompanies the formation of one mole of the compound in its standard state?

• Hess's Law

• standard enthalpy of formation

• activation energy

• catalyst

Elements in their standard state have a ΔH°f of…

• 0 kJ/mol

• 1 kJ/ mol

• 2 kJ/ mol

• 3 kJ/mol

If the enthalpy was -2270, this reaction is…

• vaporization

• dissociation

• combustion

• decomposition

Which of the following devices is used for measuring the amount of heat absorbed or released?

• manometer

• calorimeter

• hydrometer

• venturi meter

In this reaction S (s) + O2 (g) ----SO2 (g) ΔH= -300 kJ. What is the enthalpy to burn 2 mol of sulfur?

• -300 kJ

• -450 kJ

• -600 kJ

• -750 kJ