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How does magnesium metal react with hydrochloric acid?

Answer 1

Well we gots an oxidation reaction.....

#Mg(s) + 2HCl(aq) rarr MgCl_2(aq) + H_2(g) + Delta#

...or as a word equation...

#"magnesium + hydrochloric acid"rarr"magnesium chloride+dihydrogen"#

Magnesium is oxidized and protium ion is reduced....and because we form an inorganic salt...with high lattice enthalpy, energy is released upon this bond formation, and heat is EVOLVED.....

And so is the reaction as written #"exothermic or endothermic"#?

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Answer 2

Cameron Andrews

Magnesium metal reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas. The chemical equation for this reaction is:

[ \text{Mg} + 2\text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2 ]

In this reaction, magnesium displaces hydrogen from hydrochloric acid to form magnesium chloride (( \text{MgCl}_2 )) and releases hydrogen gas (( \text{H}_2 )). The reaction is exothermic, meaning it releases heat. Magnesium chloride is a salt that remains dissolved in the solution, while hydrogen gas is evolved as a gas and can be collected or observed as bubbles.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.