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18 July, 23:44

Calculate the volume of oxygen required to burn 12.00 l of ethane gas, c2h6, to produce carbon dioxide and water, if the volumes of c2h6 and o2 are measured under the same conditions of temperature and pressure

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  1. 19 July, 00:03
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    The volume of oxygen required to burn 12.00 L ethane is calculated as follows

    find the moles of C2H6 used

    At STP 1 mole is always = 22.4 L, what about 12.00 L

    = (12.00L x 1 moles) 22.4 L = 0.536 moles

    write the reacting equation

    2C2H6 + 7O2 = 4CO2 + 6H2O

    by use of mole ratio between C2H6 : O2 which is 2:7 the moles of O2

    = 0.536 x7/2 = 1.876 moles

    again at STP 1mole = 22.4 L what about 1.876 moles

    = 22.4 L x 1.876 moles / 1 mole = 42.02 L
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