ICE Chart Calculations Worksheet - Answer Key

 

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  1. What is an ICE chart?

    An ICE chart is a means of organizing data when solving a problem for an equilibrium reaction. 

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  2. Consider:

    PCl5 (g)     PCl3 (g) + Cl2 (g)

    If an evacuated flask is filled with 0.50 atm of pure PCl5  what is Kp  if there is a pressure of 0.84 atm after equilibrium has been achieved?

    Kp = 0.72

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  3. At 25oC, K=0.090 for: 

    H2O (g) + Cl2O (g)     2HOCl (g)

    Calculate the equilibrium concentrations of all species if 1.5g H2O and 2.3g Cl2O are mixed in a 1.4L flask.

    [H2O] = 0.0552 M
    [Cl2O] = 0.0146 M
    [HOCl] = 8.58 x 10-3 M

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  4. Consider :

    2 CO2 (g)     2CO (g) + O2 (g)                         K = 2.0 x 10-6

    If 2.0 mol CO2 is initially placed into a 3.5L vessel, calculate equilibrium concentrations of all species.

    [CO2] = 0.56 M
    [CO] = 0.0109 M
    [O2] = 5.46 x 10-3 M

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  5. Consider:

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

    If at equilibrium, the concentrations for H2, N2 and NH3 are 5.0M, 8.0M, and 4.0M, respectively.  What were the initial concentrations of H2 and N2 put into the container?

    [H2] = 11.0M
    [N2] = 10.0 M

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