27. 2 aqueous solutions are both at room temperature and are then mixed in a cof

Question

27. 2 aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter. The reaction causes the temperature of the resulting solution to fall below room temperature. Which of the following statements is TRUE? a. The products and reactants have a same potential energy b. Energy is leaving the system during reaction. c. The reaction is exothermic. d. This type of experiment will provide data to calculate rxn e. The products have higher potential energy than the reactants.

Explanation / Answer

Answer is option d. and e.

e. The product have higher potential energy than the reactants

d. This type of experiment will provide data to calculate deltaE of the reaction

reason: the above reaction is endothermic reaction as a result potential energy of the product is higher than reactant, therefore energy is gained by system from surronding

the difference in temperture will helpful to arrive the deltaE of the reaction

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