# Total Volume of Gas Collected

Potassium chlorate, KClO3, decomposes when heated:

KClO3 (s) Â® KCl (s) + 3/2 O2 (g)

1.00 gram of potassium chlorate is completely decomposed and the oxygen is

collected over water at 25Â°C and 0.99 atm. Calculate the total volume of gas

collected. (The vapor pressure of water at 25Â°C is 23.8 torr).

https://brainmass.com/chemistry/gas-laws/total-volume-gas-collected-56691

#### Solution Preview

KClO3 -----> KCl + 3/2 O2

Solution:

Let's multiple the whole equation by "2" to get rid of the 3/2 in front of the O2.

2 KClO3 -----> 2 KCl + 3 O2

That is easier to look at.

We start with 1.00 g of KClO3. In order to find out how much oxygen gas is released, we need to convert 1.00 grams into moles, and then use the moles of KClO3 to figure out how many moles of oxygen gas should be ...

#### Solution Summary

This Solution contains over 300 words and calculations to aid you in understanding the Solution to this questions.