Ask Question
20 September, 12:11

An unknown compound is discovered in a raid on a terrorist organization; it is believed that the compound is Sarin. When a 10.0-gram sample of this compoun is completely combusted, 15.6 g CO2 and 6.4 g H20 are produced, along with other combustion products. Using numerical calculations, prove that this unknown compound can not be Sarin.

+1
Answers (1)
  1. 20 September, 12:47
    0
    Given:

    Mass of the unknown compound (believed to be Sarin) = 10.0 g

    Mass of CO2 produced = 15.6 g

    Mass of H2O produced = 6.4 g

    To determine:

    If the unknown compound is Sarin

    Explanation:

    The molecular formula for Sarin is: C₄H₁₀FO₂P

    Based on stoichiometry the C:H ratio = 4:10 i. e 2:5

    Now, from the combustion dа ta:

    # moles of CO2 produced = # moles of C present in the unknown sample

    Similarly, (# moles of H2O produced) * 2 = # moles of H present in the unknown sample

    # moles of CO2 = 15.6 g/44 g. mol-1 = 0.354 moles

    # moles of H2O = (6.4 g / 18 g. mol-1) * 2 = 0.711 moles

    The C:H ratio = 0.354 : 0.711 = 1:2

    Ans: Since the C:H ratio does not match the actual stoichiometry based on the molecular formula, the unknown compound is not Sarin.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “An unknown compound is discovered in a raid on a terrorist organization; it is believed that the compound is Sarin. When a 10.0-gram sample ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers