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3 years ago

• Balance this chemical equation.

Chemistry

1 answer:

user100 [1]3 years ago

4 0

Answer:

Explanation:

Chemical equation:

FeCl₃ + NaOH → Fe(OH)₃ + NaCl

Balanced chemical equation:

FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl

Step 1:

FeCl₃ + NaOH → Fe(OH)₃ + NaCl

Fe = 1 Fe = 1

Cl = 3 Cl = 1

Na = 1 Na = 1

OH = 1 OH = 3

Step 2:

FeCl₃ + 3NaOH → Fe(OH)₃ + NaCl

Fe = 1 Fe = 1

Cl = 3 Cl = 1

Na = 3 Na = 1

OH = 3 OH = 3

Step 3:

FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl

Fe = 1 Fe = 1

Cl = 3 Cl = 3

Na = 3 Na = 3

OH = 3 OH = 3

Now we the equation is completely balanced and follow the law of conservation of mass because there are equal number of atoms of each elements are present on both side.

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction .

Type of reaction:

It is double displacement reaction.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

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One of the reactions that occurs in a blast furnace, in which iron ore is converted to cast iron, is Fe2O3 + 3CO → 2Fe + 3CO2 Su

Tpy6a [65]

Answer : The percent purity of $Fe_2O_3$ in the original sample is 87.94 %

Explanation :

The given balanced chemical reaction is:

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Mass of original sample = $2.86\times 10^3kg$

$\text{Percent purity}=\frac{\text{Mass of }Fe_2O_3}{\text{Mass of sample}}\times 100$

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