Calculate the value of AH° for the reaction: AH° = -94.6 kJ
AH° = -286.0 kJ
H202 (1) - H20 (1) + 1/2O2(g)
H2 (9) + 4202 (9) - H20 (1)
H2 (g) + H202 (0) + 2 H20 (1)
AHO = ? kJ
A. + 191.4
B. + 380.6
C. -380.6
D. -191.4

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

sure im new too!

explanation: