In a synthesis reaction one reactant contains 346 J of chemical energy and one reactant contains 153 J of chemical energy. the product contains 435 J of chemical energy. Because energy is conserved. What energy change occurs during the reaction? A) 64 J of energy is released B) 242 J of energy is absorbed C) 64 J is absorbed D) 242 J of energy is released

Question

Simone Oneal

Chemistry

16 April, 18:01

In a synthesis reaction one reactant contains 346 J of chemical energy and one reactant contains 153 J of chemical energy. the product contains 435 J of chemical energy. Because energy is conserved. What energy change occurs during the reaction? A) 64 J of energy is released B) 242 J of energy is absorbed C) 64 J is absorbed D) 242 J of energy is released

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Felicity Burns · Answer 1

A) 64 J of energy is released

Sum of energy of Reactants = Energy of Products

Sum of energy of Reactants = 346 + 153 = 499 J

But Product is 435J, which is less than that of the reactants, which means some must have been lost as heat.

499 - 435 = 64 J

Hence 64J of energy must have been released.