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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

Question

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Solution

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: Al+H2OAl(OH)3+H2 \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: 3H2O 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: 2Al(OH)3+3H2 2 \text{Al(OH)}_3 + 3 \text{H}_2

4. ### Verify and Summarize

Let’s summarize:

  • After balancing the equation, we have: 2Al+6H2O2Al(OH)3+3H2 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.

This problem has been solved

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