How many liters of oxygen will be obtained from the decomposition of 1 g of H2O2. if the gas is collected at 28 degrees celsius and 0.867 atm?
You will obtain 0.42 L of oxygen.
There are four steps involved in this stoichiometry problem:
Step 1. Write the balanced chemical equation.
Step 2. Convert grams of
Step 3. Convert moles of
Step 4. Calculate the volume of
For this calculation, we can use Ideal Gas Law:
#color(blue)(barul|stackrel(" ")( pV = nRT)|)#
WE can rearrange this formula to give
#V = (nRT)/p#
The volume of
Note: The answer can have only one significant figure, because that is all you gave for the mass of
However, I carried the calculation to two significant figures.
Here's a useful video on mass-volume conversions.