In the equation

2H2 + 102 → 2H20
if you change the 2H2 to 3H2 molecules and balance the equation, identify which statement is correct?
(1 point)
Each oxygen molecule will combine with 2 hydrogen molecules with no leftover molecules.
• The equation will produce three molecules of water.
• It is not possible to produce water without leftover molecules.
• The result of the equation will be the same.

1 answer

To balance the modified equation where you have 3H2 instead of 2H2, we start with the original reaction:

Original:
\[ 2 H_2 + O_2 \rightarrow 2 H_2O \]

If we change it to 3H2, the new equation looks like this:

New:
\[ 3 H_2 + O_2 \rightarrow ? H_2O \]

To balance the new equation, we recognize that each water molecule (H2O) requires 2 hydrogen atoms. If we have 3 H2 (which gives us 6 hydrogen atoms), we can produce:

\[ \frac{6 \text{ H}}{2 \text{ H per H}_2O} = 3 \text{ H}_2O \]

The balanced equation will be:

\[ 3 H_2 + 3 O_2 \rightarrow 3 H_2O \]

Now, examining the provided statements, the correct statement is:

  • The equation will produce three molecules of water.

Therefore, this statement accurately reflects the result of the balanced equation after changing to 3 H2.

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