Regents Prep: Chemistry Multiple-Choice Questions

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Helpful memory hint: Increasing temperature of a system at equilibrium, favors the endothermic reaction. See also #15 and # 16 this topic.'>

Question 10 of 16   Kinetics/Equilibrium

This question may require the use of the Chemistry Reference Tables or the Periodic Table of Elements. Given the equilibrium system at 25°C: NH4Cl(s) <-> NH4+(aq) + Cl-(aq) (H = +3.5 kcal/mol) What change will shift the equilibrium to the right?  1.  decreasing the temperature to 15°C?  2.  increasing the temperature to 35°C?  3.  dissolving NaCl crystals in the equilibrium mixture?  4.  dissolving NH4NONH3 crystals in the equilibrium mixture?

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