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Grace [21]
3 years ago
15

Write a balanced molecular equation and a net ionic equation for the reaction that occurs when magnesium hydroxide reacts with a

hydrochloric acid solution. Express your answers as chemical equations separated by a comma. Identify all of the phases in your answer.
Chemistry
1 answer:
Elina [12.6K]3 years ago
5 0

Answer:

Balanced molecular equation and net ionic equation have been shown below.

Explanation:

Mg(OH)_{2} is a weak base as it does not dissociate completely in water. HCl is a strong acid as it dissociates completely in water.

Reaction between Mg(OH)_{2} and HCl is an example of acid-base reaction. Here a salt MgCl_{2} is formed along with H_{2}O.

Balanced molecular equation:

Mg(OH)_{2}(aq.)+2HCl(aq.)\rightarrow MgCl_{2}(aq.)+2H_{2}O(l)

To write net ionic equation, spectator ions are to be removed from both side of total ionic equation. Here Cl^{-} is the spectator ion.

Total ionic equation:

Mg(OH)_{2}(aq.)+2H^{+}(aq.)+2Cl^{-}(aq.)\rightarrow Mg^{2+}(aq.)+2Cl^{-}(aq.)+2H_{2}O(l)

Net ionic equation:

Mg(OH)_{2}(aq.)+2H^{+}(aq.)\rightarrow Mg^{2+}(aq.)+2H_{2}O(l)

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Karolina [17]

Hi!


The correct option would be A.


This is because the displacement reaction would take place as follows

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A displacement reaction is one in which a substitution occurs, as the more reactive element in the mixture replaces one that is less reactive.

In the electrochemical series, we find Ca higher than Zn, which is indicative of Ca being more reactive, and having the capacity to displace Zn to form a compound.


Option D would be incorrect as no such substitution occurs.

Option B would be incorrect because again, there is no substitution occurring, and also because two metals alone (Ca and Zn in our case) can never react to form a compound.

Option C would be incorrect because it is not possible because CaCl and ZnCl are forms that are too unstable to exist due to an overall positive charge.


Hope this helps!

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