Lab: Enthalpy Answers

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The diagram to the right shows energy for two reactions, A and B.Which reaction has the higher Grxn?

Which reaction has the higher activation energy?

The diagram shows three Maxwell-Boltzmann frequency graphs.Which graph represents the system with the highest temperature?

Based on this information, what is the most likely reason that refrigerating most foods reduces the rate at which they spoil?

What concentration of hydrogen peroxide would cause this reaction to proceed most quickly?

N2(g) + 3H2(g) 2NH3(g)

Refrigerate food to keep it from spoiling.

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Which reaction will most likely proceed faster?

SnO2(s) + 2H2(g) Sn(s) + 2H2O(g)

Add inert water to a reaction solution.

2SO3(g) 2SO2(g) + O2(g)

Compress the air/fuel mixture inside an engine cylinder with a piston.

Na2CO3(s) + 2HCl(aq) CO2(g) + H2O(l) + 2NaCl(aq)

Raise the boiling point of water with a pressure cooker.

Grind a metal into a fine powder.