Problemas
For the reaction 2H_(2)(g)+O_(2)(g)arrow 2H_(2)O(g) the bond enthalpies (inkJ/mol) are H-H=x,O=O=y,O-H=z Which calculation will give the value, in kJ/mol, of Delta H for the reaction? 4z-2x-y 2z-2x-y 2x+y-4z 2x+y-2z
Roztwór
José
veterano · Tutor durante 11 años
3.2
(293 Votos)
Respuesta
To determine the value of
for the reaction
, we need to consider the bond enthalpies of the bonds broken and formed during the reaction.In the reaction, the bonds broken are:- 2 H-H bonds in
- 1 O=O bond in
The bonds formed are:- 4 O-H bonds in
The calculation for
is:
Therefore, the correct calculation is
.