Which of the following represents the change in bond stability during this chemi

Question

Which of the following represents the change in bond stability during this chemical process? CH4 + 2O2 2H2O + CO2 H = -889 kJ/mole A The products have stronger, more stable bonds than the reactants because energy is released in the process. B The reactants have stronger, more stable bonds than the products because energy is released in the process. C The reactants have stronger, more stable bonds than the products because energy is absorbed in the process. D The products have stronger, more stable bonds than the reactants because energy is absorbed in the process.

Explanation / Answer

Which of the following represents the change in bond stability during this chemical process? CH4 + 2O2 2H2O + CO2 H = -889 kJ/mole

NOTE: since dHrxn is negative, this means this is exothermic, release of energy ... ignore C and D

"stronger" means that the bonds have higher energy... The reactants have high energy since they are being broken down to relaeas energy, therefore choose B

B The reactants have stronger, more stable bonds than the products because energy is released in the process.

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