Question

Mg+__HCI----MgCI2+H2

Answer 1

To balance the chemical equation for the reaction between magnesium (Mg) and hydrochloric acid (HCl), follow these steps:

1. Identify the reactants and products:
- Reactants: Magnesium (Mg) and Hydrochloric acid (HCl)
- Products: Magnesium chloride (MgCl₂) and Hydrogen gas (H₂)

2. Write the unbalanced equation:
\[
\text{Mg} + \text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2
\]

3. Balance the equation:
- On the right side, MgCl₂ contains 2 chlorine (Cl) atoms, meaning you will need 2 HCl on the left side.
- The balanced equation looks like this:
\[
\text{Mg} + 2 \text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2
\]

4. Now all elements are balanced:
- **1 Mg** on both sides
- **2 Cl** on the left and **2 Cl** in MgCl₂
- **2 H** in 2 HCl and **2 H** in H₂

So the final balanced equation is:
\[
\text{Mg} + 2 \text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2
\]