00 Hydrogen peroxide decomposes to produce water
and oxygen. The equation is:
2H,02(g) → 2H2O(g) + O2(g)
Using the following values, calculate the heat change
for the reaction and say whether it is exothermic or
endothermic. Bond energies:
0-0 = 144 kJ/mol
0-H = 464 kJ/mol
O=0 = 498 kJ/mol

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