Help!!!!!!!!Chemistry

2011-10-11 6:47 pm
The partial pressure of carbon dioxide in air at STP is 0.25mmHg. What is the concentration of carbon dioxide in moles/liter at this temperature??

Does anyone can help me for this question ??
thank you!!

回答 (3)

2011-10-12 4:33 am
✔ 最佳答案
Henry's Law:
圖片參考:http://upload.wikimedia.org/wikipedia/en/math/0/f/9/0f9ab8caa73f60863a841c93f3bdfc00.png
where p is the partial pressure of the solute in the gas above the solution, c is the concentration of the solute and kH is a constant with the dimensions of pressure divided by concentration, known as the Henry's law constant.kH for caron dioxide (CO2) at STP = 29.41 L·atm/mol

Therefore, concentration c = 0.25 / 29.41 mol/L
= 8.5 x 10 -3 mol/L
2011-10-12 3:30 am
I cant find your link, it doesnt work for chemistry.


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