# c2h5oh ra c2h5cl

C2H5OH + HClC2H5Cl + H2O

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### Word Equation

Ethanol + Hydrogen Chloride = Chloroethane + Water

One mole of

Ethanol [C2H5OH]

and one mole of

Hydrogen Chloride [HCl]

react vĩ đại form one mole of

Chloroethane [C2H5Cl]

and one mole of

Water [H2O]

### Reaction Expressions

Kc or Q = ( [C2H5Cl] [H2O] ) / ( [C2H5OH] [HCl] )

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

rate = -(Δ[C2H5OH] / Δt) = -(Δ[HCl] / Δt) = (Δ[C2H5Cl] / Δt) = (Δ[H2O] / Δt)

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

## Instructions

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 vĩ đại 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 [].

## How To Balance Equations

Read our article on how vĩ đại balance chemical equations or ask for help in our chat.

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## Balance C2H5OH + HCl = C2H5Cl + H2O Using the Algebraic Method

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To balance the equation C2H5OH + HCl = C2H5Cl + H2O 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.

1. ### Label Each Compound With a Variable

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

a C2H5OH + b HCl = c C2H5Cl + d H2O

2. ### Create a System of Equations

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

C: 2a + 0b = 2c + 0d H: 6a + 1b = 5c + 2d O: 1a + 0b = 0c + 1d Cl: 0a + 1b = 1c + 0d

3. ### Solve For All Variables

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

• 2a - 2c = 0
• 6a + 1b - 5c - 2d = 0
• 1a - 1d = 0
• 1b - 1c = 0

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

[ 2 0 -2 0 0] [ 6 1 -5 -2 0] [ 1 0 0 -1 0] [ 0 1 -1 0 0]

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

Simplify the result vĩ đại get the lowest, whole integer values.

• a = 1 (C2H5OH)
• b = 1 (HCl)
• c = 1 (C2H5Cl)
• d = 1 (H2O)
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 + HCl = C2H5Cl + H2O

Reactants Products C 2 2 ✔️ 7 7 ✔️ 1 1 ✔️ 1 1 ✔️

Since there is an equal number of each element in the reactants and products of C2H5OH + HCl = C2H5Cl + H2O, the equation is balanced.

## Balance C2H5OH + HCl = C2H5Cl + H2O 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 + HCl = C2H5Cl + H2O 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 vĩ đại 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)
ReactantsProducts
C2H5OHHClTotalC2H5ClH2OTotal
C2222✔️
H617527✔️
O1111✔️
Cl1111✔️

The number of atoms of each element on both sides of C2H5OH + HCl = C2H5Cl + H2O is equal which means that the equation is already balanced and no additional work is needed.

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