Test tommorow - urgent help needed! (1 Viewer)

[RG11]

Question is:

S (s) + O2 (g) --> SO2(g)

what volume of sulfur dioxide gas will be released at 25 degrees and 101.3 kPa when 8g of sulfur is burnt?





in the answers in sucess one chemistry it says use n = v/24.47 but i thought the formula was n= v/24.79 ?? can someone explain what is happening?? what formula do i use for these types of questions? is the change in the formula becasue of the 101.4 kPa instead of 100 kPa?

thank you in advance!

 

[QZP]

If you look at the back of the HSC periodic table, 1 mole of any gas at 101.3 kPa & 25deg occupies 24.47 L

 

[strawberrye]

Yes, the change of answer is because of the change of conditions under which the molar volume of gas was measured.