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 Form 4 Energy Changes in Chemical and Physical Processes Questions and Answers

Hydrogen peroxide decomposes according to the equation below
#H_2O_2(l)→H_2O(l)+1/2 O_2(g); DeltaH =-98kJ#
8.5 g of hydrogen peroxide contained in #100cm^3# of solution with water were completely decomposed. Determine the rise in temperature due to the
reaction. (Specific heat capacity of solution=#4.2Jg^-1K^-1# density of water=#1gcm^-3# O=16 H=1)

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