Enthalpy - Page 5
Questions
- Which of the following has highest bond enthalpies? H-F C=O H-H N(triple bond)N
- Determine the masses of titanium and iodine that react if #1.66xx10^3# #"kJ"# of heat is emitted by the reaction?
- Why is the combustion of methanol an exothermic reaction?
- If the heat of combustion for a specific compound is -1220 kJ/mol and its molar mass is 78.35 g/mol, how many grams of this compound must you burn to release 649.90 kJ of heat?
- How does enthalpy differ from heat?
- If 150 grams of water is heated from 200°C to 0°C, how many joules of heat energy are absorbed?
- Given the following reactions the enthalpy of reaction for 2N2O(g) --> 2NO(g) +N2(g) is __________ kJ? N2 (g) + O2(g) --> 2NO(g) ΔH = +180.7 kJ 2N2O(g) --> O2 (g) + 2N2(g) ΔH = -163.2 kJ
- What if soot (unburned carbon) accumulated on the bottom on the small can? would this produce a greater or a lower heat value than expected?
- An exothermic reaction releases 80.5 J of energy. How many calories of energy are released in the reaction?
- Given that #DeltaH_"combustion"^@# for #"propane"# is #-2043*kJ*mol^-1#, what mass of propane is required to give #425*kJ#?
- What do we call the energy evolved when a gaseous metal cation is hydrated by bulk water?
- How would I know the enthalpy of formation of barium carbonate on an exam?
- How do I calculate ΔHrxfollowing reaction? CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH values: Ca(s)+CO2(g)+1/2O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ Express your answer using four significant figures.
- How to do you find delta H?
- The heat content of a system is equal to the enthalpy only for a system that is at constant what?
- The value of DH0 for the reaction below is #-6535# kJ. __________ kJ of heat are released in the combustion of #16.0# g of #C_6H_6#(l)? 2C6H6(l) + 15O2 (g) --> 12CO2 (g) + 6H2O(l)
- How does energy evolve in the INCOMPLETE combustion of benzene...?
- What is the enthalpy change for the reaction #Br_2 + Cl_2 -> 2BrCl#?
- I have read that when metal like Na, K, Be put into water , heat is evolved. Can we call this heat of hydration? Please let me know what is heat of hydration actually?
- What is the term used for a well insulated reaction vessel used to measure delta H of reactions?