Question

What else is produced during the replacement reaction of magnesium and hydrochloric acid?

Mg + 2HCl H2 + ________

MgCl2
Mg2Cl2
Mg2Cl
MgCl

Answers

GPT-4o mini
In the replacement reaction between magnesium (Mg) and hydrochloric acid (HCl), magnesium reacts with hydrochloric acid to produce hydrogen gas (H₂) and magnesium chloride (MgCl₂).

The balanced equation for the reaction is:

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

So, the correct answer to fill in the blank is:

**MgCl2**.