Acid-Base Reaction: Hydrochloric Acid and Magnesium Oxide Formula

AI Thread Summary
The reaction between hydrochloric acid (HCl) and magnesium oxide (MgO) produces water and magnesium chloride (MgCl2). The correct balanced equation is 2 HCl + MgO → H2O + MgCl2. Magnesium is divalent, meaning it forms a 2+ ion, which is crucial for balancing the equation. Properly writing chemical formulas is essential for balancing reactions. Understanding the valence of elements helps ensure accurate chemical equations.
chawki
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Homework Statement


When acid and metal oxide react the product is salt and water.

Homework Equations


Write the reaction formula, when hydrochloric acid reacts with magnesium oxide

The Attempt at a Solution


Hcl and MgO
2 Hcl + MgO ------> 2H2O+ MgCl
I still find it not balanced and don't know how balance it
 
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How do you balance reaction equations in general?
 
chawki said:

Homework Statement


When acid and metal oxide react the product is salt and water.

Homework Equations


Write the reaction formula, when hydrochloric acid reacts with magnesium oxide

The Attempt at a Solution


Hcl and MgO
2 Hcl + MgO ------> 2H2O+ MgCl
I still find it not balanced and don't know how balance it

It's MgCl_2
 
Advice: before wondering how the atoms in a reaction can be balanced, you need to write all the formulas correctly.

Magnesium is divalent (you can see that in the monoxide, it has the same valence as the oxygen, 2) and this is a simple reaction, it will not get reduced, so in the salt it must have the same valence, namely 2.
 
2HCl + MgO -----> H2O + MgCl2
 

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