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Vlada [557]
3 years ago
8

When you balance a redox equation using the half-reaction method, what do you do after you write the oxidation and reduction hal

f-reactions?
Chemistry
2 answers:
Anna [14]3 years ago
4 0

Answer : The steps for balancing a redox reaction using half reaction method will include the following steps :

1) Write the basic ionic form of the reaction equation.

2) Divide the equation into two separate half reaction which will have oxidation half and reduction half reactions.

3) Balance the atoms present in each half of the reactions except O and H atoms in the reaction.

4) Balance the oxygen atoms in the reduction half of the reaction by the addition of two water molecules in the given conditions of the reaction.

5) Balance the charges present in both the half reactions.

6) The two halves of the equations reduction and oxidation are added to complete the overall reactions. After the addition of two reaction halves, cancel the same number electrons on both sides. The net ionic equation can be written after this step.

7) Finally, Verify whether the equation consists of the same type, number of co-efficients, and charges on both sides of the equation.

kow [346]3 years ago
4 0
You have to ensure that the electrons are balanced on each of the half equations first after you have the oxidation and reduction half reactions balanced you form an ionic equation were you join the two half eqautions and omit spectator ions and electrons.

hope that helps
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Answer: pure substances.


Explanation:


The given substances are:

  • H₂O₂
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All what surrounds us, which has mass and occupies spaces, is matter. There are two kind of matter: pure substances and mixtures.


Pure substances have a uniform and constant composition. On the other hand, mixtures are combinations of two or more pure substances in  any arbitratry ratio.


Pure substances may be elements or compounds. The elements are the substances conmposed by one only kind of atom. In the list of substances given, Li and O₂ are elements: all the atoms in Li are lithium, and all the atoms in O₂ are oxygen atoms.


Compounds are the chemical combination of two or more different kind of atoms. In the given list H₂O₂ and NaCl are compounds. As you see, H₂O₂ contains atoms of hydrogen and oxygen, chemically bonded, in a fixed ratio (2 atoms of hydrogen by 2 atoms of oxygen). And NaCl has atoms of Na (sodium) and Cl (chlorine), chemicaly bonded, in a fixed ratio (1:1).


There are only 118 known elements and you can find them in any modern periodic table. Therer are virtually infinitely many compounds since many different combinations of the elements can be attained.


Elements and compounds have in common that they are classified as pure substances.


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4 years ago
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