Consider the following equation: N2+O2 _ 2NO. The partial pressure (ln atm) of N2 under normal atmospheric pressure

Correct answer: B. 0.25

  • A. 0.05
  • B. 0.25
  • C. 0.35
  • D. 0.45

Explanation

Partial pressure = moles of substance/total moles * total pressure =moles of N2/total moles * total pressure =1/4 * 1 atm = 0.25

This question appeared on the ETEA MDCAT 2006 paper, which you can sit online with every answer explained.

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A reversible reaction proceeds in both forward and backward directions, so reactants and products continue changing until dynamic equilibrium is established. The topic covers the meaning of equilibrium, the equality of forward and reverse rates, and how concentration, pressure and temperature disturb equilibrium, which is separate from the rate at which equilibrium is reached.

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