whatevaxd
Jun 19, 2009, 03:12 AM
1.Both hydrogen and methane are used as gaseous fuels. Their combustion reactions are given below.
2H2+O2-->2H2O; H= -484kJ
CH4+2O2-->CO2+2H20; H=-803kJ
Which of these 2 fuels would produce the larger amount of heat per gram fuel.
explaining would be nice.. :D
2.when methane burns in the presence of oxygen, CO2 and H2O is produced.
a. identify the bonds that break and form in this reaction.
b. Compare the amount of energy required to break the bonds in the reactants with the amount of energy released during the formation of the bonds in the products.
14.NH3+H-->NH4; H=-53kJ
a.what amount of heat is evolved when 100mL of 0.10 mol L ammonia solution is added to 100mL of 0.10 mol L hydrochloric acid in a beaker?
b.If it takes 4.18J to change the temperature of 1g of this solution by 1 Celsius, determine the temperature change that would accompany this reaction. Assume 1 mL of the solution has a mass of 1g.
c. Why would this temperature change not be observed in this experiment?
I don't understand what this question is trying to ask. :confused:
Thx in advance. :D
2H2+O2-->2H2O; H= -484kJ
CH4+2O2-->CO2+2H20; H=-803kJ
Which of these 2 fuels would produce the larger amount of heat per gram fuel.
explaining would be nice.. :D
2.when methane burns in the presence of oxygen, CO2 and H2O is produced.
a. identify the bonds that break and form in this reaction.
b. Compare the amount of energy required to break the bonds in the reactants with the amount of energy released during the formation of the bonds in the products.
14.NH3+H-->NH4; H=-53kJ
a.what amount of heat is evolved when 100mL of 0.10 mol L ammonia solution is added to 100mL of 0.10 mol L hydrochloric acid in a beaker?
b.If it takes 4.18J to change the temperature of 1g of this solution by 1 Celsius, determine the temperature change that would accompany this reaction. Assume 1 mL of the solution has a mass of 1g.
c. Why would this temperature change not be observed in this experiment?
I don't understand what this question is trying to ask. :confused:
Thx in advance. :D