What is the coefficient of Al when the following equation is correctlybalanced?Al + H2O → Al(OH)3 + H2Question 1Select one:a.1b.2c.3d.4e.5

To find the coefficient of Al when the equation is balanced, we will break down the process.

1. ### Break Down the Problem

We need to balance the chemical equation: $\text{Al} + \text{H}_2\text{O} \rightarrow \text{Al}(\text{OH})_3 + \text{H}_2$

2. ### Relevant Concepts

Balancing a chemical equation involves ensuring the number of atoms of each element is equal on both sides of the equation. We will use the following method for balancing:

• Count the number of atoms of each element on both sides.
• Adjust coefficients to balance each element.

3. ### Analysis and Detail

• On the left side:

  • Al: 1
  • H: 2 (from H2O)
  • O: 1 (from H2O)

• On the right side:

  • Al: 1 (from Al(OH)3)
  • H: 3 (1 from Al(OH)3 and 2 from H2)
  • O: 3 (from Al(OH)3)

Now, let’s balance the equation:

1. To balance the hydroxide ions (OH), we have 3 OH on the right, so we need 3 water molecules on the left: $3 \text{H}_2\text{O}$

2. Now the left side becomes:

   • Al: 1
   • H: 6 (from 3H2O)
   • O: 3 (from 3H2O)

3. The right side now becomes:

   • Al: 1 (from Al(OH)3)
   • H: 4 (3 from Al(OH)3 and 2 from H2)
   • O: 3 (from Al(OH)3)

4. Now, to balance Hydrogen, we need 2 Al(OH)3: $2 \text{Al(OH)}_3 + 3 \text{H}_2$

4. ### Verify and Summarize

Let’s summarize:

• After balancing the equation, we have: $2 \text{Al} + 6 \text{H}_2\text{O} \rightarrow 2 \text{Al(OH)}_3 + 3 \text{H}_2$
• Thus, the coefficient of Al is 2.

Final Answer

The coefficient of Al is 2.