Final Answer:
The amount of hydrogen gas that was theoretically produced during the reaction can be calculated using the stoichiometry of the balanced chemical equation for the reaction.
Step-by-step explanation:
To determine the amount of hydrogen gas produced, we first need to refer to the balanced chemical equation for the reaction. For example, consider the reaction
where water
decomposes into hydrogen gas
and oxygen gas

The balanced equation indicates that two moles of water produce two moles of hydrogen gas. Therefore, the moles of hydrogen gas
can be directly related to the moles of water
through the stoichiometric coefficients:
. If the amount of moles of water is known, the same amount of moles of hydrogen gas will be theoretically produced under ideal conditions.
To perform the calculation, simply multiply the given moles of water by the stoichiometric coefficient of hydrogen gas in the balanced equation. For instance, if 4 moles of water are present, the theoretical moles of hydrogen gas would be
This calculation ensures a direct conversion based on the stoichiometry of the reaction, providing the theoretical yield of hydrogen gas.
In conclusion, the amount of moles of hydrogen gas produced during a reaction can be determined by applying the stoichiometry of the balanced chemical equation. This method allows for a precise calculation based on the molar ratios of reactants and products, providing insight into the theoretical yield of the desired product.
Complete Question:
How do you calculate the amount, in moles, of hydrogen gas that was theoretically produced during the reaction?