Chemistry 30 Equilibrium

Write reversible reactions for each of the following situations (be sure to balance your equations):

a.	Hydrogen iodide gas (HI) decomposes into its elements.
b.	Hydrogen and nitrogen gases combine to form ammonia gas, NH₃.

Describe two different mixtures of starting materials that can be used to produce the equilibrium

A + B ↔ C + D

If the system represented by the following equation is found to be at equilibrium at a specific temperature, which of the following statements is true? Explain your answers.

H₂O_(g) + CO_(g) ↔ H_{2 (g)} + CO_{2 (g)}

a.	All species must be present in the same concentration.
b.	The rate of the forward reaction equals the rate of the reverse reaction.
c.	We can measure continual changes in the reactant concentrations.

Would you expect the combustion of methane, CH₄ with oxygen to form carbon dioxide and water, to be a reversible reaction?

Hint: Methane, or natural gas, is an important energy source. Considering this, what did you learn in the last unit that will help you predict whether or not the reverse reaction is likely to be spontaneous?

check your answer

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Chemistry 30

Chemical Equilibrium

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