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Marianna [84]
3 years ago
11

Which equation is balanced?

Chemistry
2 answers:
vichka [17]3 years ago
7 0

Answer:

2Na+F2 yields 2NaF is balanced.

Explanation:

There are 2 sodium and 2 fluorine in both reactants and product: In 2NaF the 2 is distributed because it is in the beginning of the compound.

stich3 [128]3 years ago
5 0

Answer : The correct balanced chemical equation will be, 2Na+F_2\rightarrow 2NaF

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

Part 1 :

The given chemical reaction is,

2Al+3O_2\rightarrow Al_2O_3

This reaction is an unbalanced chemical reaction because in this reaction number of aluminium and oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the Al_2O_3, the coefficient '3' put before the O_2 and the coefficient '4' put before the Al then we get the balanced chemical equation.

The balanced chemical reaction will be,

4Al+3O_2\rightarrow 2Al_2O_3

Part 2 :

The given chemical reaction is,

2Al+F_2\rightarrow AlF_3

This reaction is an unbalanced chemical reaction because in this reaction number of aluminium and fluorine atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the AlF_3 and the coefficient '3' put before the F_2 then we get the balanced chemical equation.

The balanced chemical reaction will be,

2Al+3F_2\rightarrow 2AlF_3

Part 3 :

The given chemical reaction is,

Mg+O_2\rightarrow 2MgO

This reaction is an unbalanced chemical reaction because in this reaction number of magnesium atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the Mg then we get the balanced chemical equation.

The balanced chemical reaction will be,

2Mg+O_2\rightarrow 2MgO

Part 4 :

The given chemical reaction is,

2Na+F_2\rightarrow 2NaF

This reaction is a balanced chemical reaction because in this reaction the number of atoms are balanced of both side of the reaction.

Hence, the correct balanced chemical equation will be, 2Na+F_2\rightarrow 2NaF

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Answer:

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