Question

How many liters of nitrogen gas is produced if 50.0L of water is produced at STP?

Answer 1

Answer:

• 25.0 liter of nitrogen gas

Explanation:

1. Chemical equation

Ammonium nitrite is a solid compound that decomposes into nitrogen gas and water vapor as per this chemical equation:

          $NH_4NO_2(s)\rightarrow N_2(g)+2H_2O(g)$

2. Mole ratio

       $1molN_2(g)/2molH_2O(g)$

3. Volume ratio

Since, both species are gases and are at same temperature and pressure, the volume ratio is equal to the mol ratio.

Thus, the volume ratio is:

      $1literN_2(g)/2literH_2O(g)$

4. Use the volume ratio with the known amount of water produced

      $50.0literH_2O(g)\times 1literN_2(g)/2literH_2O(g)=25.0literN_2(g)$