In the reaction 2H2 + O2 → 2H2O, how many liters of water vapor are produced fro

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Question: In the reaction 2H2 + O2 → 2H2O, how many liters of water vapor are produced from 4 liters of hydrogen at STP?

Options:

Correct Answer: 8 L

Solution:

4 L of H2 produces 4 L of H2O since the ratio is 1:1.

In the reaction 2H2 + O2 → 2H2O, how many liters of water vapor are produced from 4 liters of hydrogen at STP?

In the reaction 2H2 + O2 → 2H2O, how many liters of water vapor are produced from 4 liters of hydrogen at STP?

Step 1: Identify the reaction: 2H2 + O2 → 2H2O.
Step 2: Understand that the coefficients in the reaction represent the volume ratio of gases at STP (Standard Temperature and Pressure).
Step 3: Note that 2 volumes of H2 produce 2 volumes of H2O, which means the ratio is 1:1.
Step 4: Since you have 4 liters of H2, you can use the 1:1 ratio to find out how much H2O is produced.
Step 5: Calculate the volume of H2O produced: 4 liters of H2 will produce 4 liters of H2O.

Stoichiometry – Understanding the mole ratio in chemical reactions and how it relates to gas volumes at STP.
Gas Laws – Applying the principles of gas behavior, particularly at standard temperature and pressure (STP).