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19 August, 08:50

Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water.

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  1. 19 August, 08:53
    0
    CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

    Explanation:

    Step 1: Data given

    gaseous methane = CH4 (g)

    Combustion reaction is adding O2. The products will be carbondioxide (CO2) and water vapor (H2O)

    Step 2: The unbalanced equation

    CH4 (g) + O2 (g) → CO2 (g) + H2O (g)

    Step 3: Balancing the equation

    CH4 (g) + O2 (g) → CO2 (g) + H2O (g)

    On the left side we have 4x H (in CH4), on the right side we have 2x H (in H2O). To balance the amount H on both sides, we have to multiply H2O by 2.

    CH4 (g) + O2 (g) → CO2 (g) + 2H2O (g)

    On the left side we have 2x O (in O2), on the right side we have 4x O (2x in CO2 and 2x in 2H2O). To balance the amount of O on both sides, we have to multiply O2 on the left side, by 2. Now the equation is balanced.

    CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
  2. 19 August, 09:01
    0
    CH₄ (g) + 2O₂ (g) - --> 1CO₂ (g) + 2H₂O (g)

    Explanation:

    any combustion of a hydrocarbon equation is in form:

    CₓHₐ (g) + BO₂ (g) - --> YCO₂ (g) + ZH₂O (g), where x, a, b, y, z are all whole number positive integers

    there will be 1 CO₂ to 2 H₂O, since there is 1 C to 4 H in CH₄; it is not 1:4 since 2 H is needed in H₂O

    CH₄ (g) + _O₂ (g) - --> 1CO₂ + 2H₂O

    there is 4 total O on products side, which can make 2O₂

    CH₄ (g) + 2O₂ (g) - --> 1CO₂ (g) + 2H₂O (g)
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