magnesium hydroxide is added to hydroiodic acid to form maagnesium iodide and water
To determine the balanced chemical equation for the reaction between magnesium hydroxide (Mg(OH)2) and hydroiodic acid (HI) to form magnesium iodide (MgI2) and water (H2O), we need to follow these steps:
Step 1: Write the formulas of the reactants and products:
- Magnesium hydroxide: Mg(OH)2
- Hydroiodic acid: HI
- Magnesium iodide: MgI2
- Water: H2O
Step 2: Write the unbalanced equation:
Mg(OH)2 + HI â MgI2 + H2O
Step 3: Balance the equation:
To balance the equation, we need to make sure that the number of each type of atom is the same on both sides of the equation.
Balancing the hydrogen (H) atoms: There are two hydrogen atoms on the left side (2H from HI and 2H from Mg(OH)2) and two hydrogen atoms on the right side (2H from H2O). This is already balanced.
Balancing the iodine (I) atoms: There is one iodine atom on both sides. This is already balanced.
Balancing the magnesium (Mg) atoms: There is one magnesium atom on both sides. This is already balanced.
Balancing the oxygen (O) atoms: There are two oxygen atoms on the left side (2O from Mg(OH)2) and one oxygen atom on the right side (1O from H2O). To balance the oxygens, we need to add a coefficient of 2 in front of H2O.
The balanced chemical equation is:
Mg(OH)2 + 2HI â MgI2 + 2H2O
Therefore, when magnesium hydroxide is added to hydroiodic acid, it reacts to form magnesium iodide and water, according to the balanced equation: Mg(OH)2 + 2HI â MgI2 + 2H2O.