TBR General Chemistry Chapter 1 Example 1.8

[eu nao sei]

I am confused on how they obtained the 22.4 liters. (I took gen chem 5 years ago so I dont remember how to do it)

Example 1.8
How many liters of Co2 (g) results from the complete decomposition of 10.0 grams of CaCO3 (s) to carbon dioxide and calcium oxide at STP?

CaCO3 ----> CaO (s) + CO2 (g)

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[stevvo111]

I am confused on how they obtained the 22.4 liters. (I took gen chem 5 years ago so I dont remember how to do it)

Example 1.8
How many liters of Co2 (g) results from the complete decomposition of 10.0 grams of CaCO3 (s) to carbon dioxide and calcium oxide at STP?

CaCO3 ----> CaO (s) + CO2 (g)

22.4 liters is how much 1 mol of any gas at STP occupies (STP is 1atm and 0 C, I think)

use this for any calculation asking for volume giving only moles. I loved this example because it helped me finally understand how they go from grams to volume.

 

[eu nao sei]

thanks!