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16 February, 21:44

Problem PageQuestion Gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. If of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water.

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  1. 17 February, 01:00
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    = (1.08 / 2.2) 100% = 49%

    Explanation:

    Balanced Equation: 2CH₃CH₃ (g) + 5O₂ (g) → 2CO₂ (g) + 6H₂O (g)

    Calculate moles of CH₃CH₃ and O₂

    1.2 ₃₃ (1 ₃₃ / 30.0694 ₃₃) = 0.040 ₃₃

    8.6 ₂ (1 2 / 31.998 ₂) = 0.27 ₃₃

    Find limiting reagent 0.040 ₃₃ (5 ₂ / 2 ₃₃) = 0.10 ₂

    CH₃CH₃ is the limiting Reagent

    CH₃CH₃ (L. R.) O₂ CO₂ H₂O

    Initial (mol) 0.040 0.27 0 0

    Change (mol) - 2x=-0 - 5x = - 0.10 + 2x=+0.040 + 6x=+0.12

    Final (mol) 0 0.117 0.040 0.12

    0.040 - 2 = 0 = 0.020

    Determine percent yield

    0.12 ₂ (18.0148 ₂ / 1 ₂) = 2.2 ₂

    = (1.08 / 2.2) 100% = 49%
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