If the heat of combustion of hydrogen is -285.8kJ,
What is the heat of formation of water?
+571.6 kJ
-571.6 kJ
-285.8 kJ
+285.8 kJ
Explanation
Video Explanation
Post your Contribution
Discussions (17)
The heat of combustion of hydrogen is the reaction of hydrogen with oxygen and the reaction of hydrogen with oxygen forms water so therefore the heat formation of water is the same as the heat combustion of hydrogen and that is -285.8KJ
OH^- + H^+ -H20
| |
(1mol) (1mole)
from the above equation of reaction
1 mole of hydrogen (H+) liberated -285.5 kJ
.:. 1 mole of H20 will liberate (-285.5 x 1)/1
= -285.5 kJ mol^-1
so the correct option is C this is because the liberated heat or combustion of hyddrogen has the same reaction with that of Oxygen which when combined together forms water (H20)
