7. Which statement is supported by the chemical equation Zn + 2HCI → H2 + ZnCl2 + energy? A. The reaction is endothermic. B. The change in enthalpy is negative. C. The reactants are more stable than the products. D. The products have a higher potential energy than the reactants.

7. Which statement is supported by the chemical equation Zn + 2HCI → H2 + ZnCl2 + energy? A. The reaction is endothermic. B. The change in enthalpy is negative. C. The reactants are more stable than the products. D. The products have a higher potential energy than the reactants.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

7. Which statement is supported by the
chemical equation
Zn + 2HC1 → H2 + ZnCl2 + energy?
A. The reaction is endothermic.
B. The change in enthalpy is negative.
C. The reactants are more stable than the
products.
D. The products have a higher potential
energy than the reactants.
8. Ammonium chloride is produced in the
thermochemical equation shown
NH3 (g) + HCI (g) → NH.Cl (s)
AH = -200 kJ
How many moles of NH4CI have been
produced if the change in enthalpy
is -600 kJ?
A. 2 moles
B. 3 moles
C. 4 moles
D. 5 moles

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