Write balanced molecular equation for the reaction between hydrobromic acid and potassium hydroxide.
express your answer as a chemical equation. identify all of the phases in your answer.

The balanced equation for this neutralization reaction is:

⇒

Explanation:

Hydrobromic acid is a strong acid. It is produced by dissolving hydrogen bromide (HBr) in water. Thus, its phase is aqueous (aq).

Potassium hydroxide is a strong base, usually commercialized as colorless pellets (s), but could be easily dissolved in water to ease the reaction, that is why it will be considered aqueous for this reaction.

The reaction between an acid and a base is called neutralization reaction, and it produces liquid water (l) and salt, as follows:

    ⇒

We can check that this equation is balanced since it has the same amount of each element on both sides of the equation:

⇒    

K:   0      +      1       =       1      +      0

Br:   1       +     0       =       1      +      0

H:   1       +     1        =       0     +      2

O:    0      +     1        =       0     +      1

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

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