c2h5oh ra c2h4

C2H5OH + OC2H4(OH)2

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Word Equation

Ethanol + Oxygen = Ethylene Glycol

One mole of

Ethanol [C2H5OH]

and one mole of

Oxygen [O]

combine lớn khuông one mole of

Ethylene Glycol [C2H4(OH)2]

Reaction Expressions

Kc or Q = ( [C2H4(OH)2] ) / ( [C2H5OH] [O] )

(assuming all reactants and products are aqueous. substitutue 1 for any solids/liquids, and Psubstance for gases.)

rate = -(Δ[C2H5OH] / Δt) = -(Δ[O] / Δt) = (Δ[C2H4(OH)2] / Δt)

(assuming constant volume in a closed system and no accumulation of intermediates or side products)


To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above.

  • Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
  • Ionic charges are not yet supported and will be ignored.
  • Replace immutable groups in compounds lớn avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.
  • Compound states [like (s) (aq) or (g)] are not required.
  • You can use parenthesis () or brackets [].

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Balance C2H5OH + O = C2H4(OH)2 Using the Algebraic Method

To balance the equation C2H5OH + O = C2H4(OH)2 using the algebraic method step-by-step, you must have experience solving systems of linear equations. The most common methods are substitution/elimination and linear algebra, but any similar method will work.

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  1. Label Each Compound With a Variable

    Label each compound (reactant or product) in the equation with a variable lớn represent the unknown coefficients.

    a C2H5OH + b O = c C2H4(OH)2

  2. Create a System of Equations

    Create an equation for each element (C, H, O) where each term represents the number of atoms of the element in each reactant or product.

    C: 2a + 0b = 2c H: 6a + 0b = 6c O: 1a + 1b = 2c

  3. Solve For All Variables

    Use substitution, Gaussian elimination, or a calculator lớn solve for each variable.

    • 2a - 2c = 0
    • 6a - 6c = 0
    • 1a + 1b - 2c = 0

    Use your graphing calculator's rref() function (or an online rref calculator) lớn convert the following matrix into reduced row-echelon-form:

    [ 2 0 -2 0] [ 6 0 -6 0] [ 1 1 -2 0]

    The resulting matrix can be used lớn determine the coefficients. In the case of a single solution, the last column of the matrix will contain the coefficients.

    Simplify the result lớn get the lowest, whole integer values.

    • a = 1 (C2H5OH)
    • b = 1 (O)
    • c = 1 (C2H4(OH)2)
  4. Substitute Coefficients and Verify Result

    Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced.

    C2H5OH + O = C2H4(OH)2

    Reactants Products

    Since there is an equal number of each element in the reactants and products of C2H5OH + O = C2H4(OH)2, the equation is balanced.

Balance C2H5OH + O = C2H4(OH)2 Using Inspection

The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the over of a chemical reaction as at the beginning. To be balanced, every element in C2H5OH + O = C2H4(OH)2 must have the same number of atoms on each side of the equation. When using the inspection method (also known as the trial-and-error method), this principle is used lớn balance one element at a time until both sides are equal and the chemical equation is balanced.

1. Count the number of each element on the left and right hand sides

Reactants (Left Hand Side)Products (Right Hand Side)

The number of atoms of each element on both sides of C2H5OH + O = C2H4(OH)2 is equal which means that the equation is already balanced and no additional work is needed.

Xem thêm: zn + h2so4