Jul '13
3
MCAT Question of the Day | MCAT Course


  • Q:

    The oxygen-evolving reaction Ca(OCl)2 (s) → CaCl2 (s) + O2 (g) is initiated with 71 g of Ca(OCl)2 in a 5.5 L sealed chamber with an unknown amount of inert gas. If the resulting oxygen evolved increases the pressure of the chamber by 20%, how many moles of gas were in the chamber initially? Assume all gases are ideal and the temperature of the reaction remains constant.

     

    A

    0.5 moles

    B

    2.5 moles

    C

    3 moles

    D

    11.2 moles




    Tags: Stoichiometry | Quantitative Skills | Suggest a tag
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