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pav-90 [236]
3 years ago
14

that equal volumes of gas under the same conditions have equal numbers of molecules. This concept is a very important one, as it

will be used often in future studies.
Chemistry
2 answers:
Llana [10]3 years ago
7 0

<u>Answer:</u>

Avagadro’s law states at constant temperature and pressure, volume is directly proportional to the number of molecules of the gas.

For example  

At STP that is standard temperature and pressure at which T = 273K and P = 1 atm

Volume occupied by 1 mole (6.022\times 10^{23} gas molecules) of any gas is equal to 22.4L

That is

1 mole = 22.4L

2 mole = 44.8 L

3 mole = 67.2 L

So 1 mole of CO_2 gas =22.4L (6.022\times 10^{23} gas molecules)

1 mole of H_2 gas =22.4L (6.022\times 10^{23} gas molecules)

1 mole of Cl_2 gas =22.4L (6.022\times 10^{23} gas molecules)

mash [69]3 years ago
4 0

Answer:

This one is easy. It's the Avogadros' Hypothesis or Avogadros' Law, where the equal volumes of gases in SAME conditions have an equal amount of molecules!

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The balanced equation for the above reaction is as follows;
2HCl + K₂SO₃ ---> 2KCl + H₂O + SO₂
stoichiometry of HCl to SO₂ is 2:1
number of moles of HCl reacted - 15.0 g / 36.5 g/mol = 0.411 mol 
according to molar ratio 
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since we know the number of moles we can find volume using ideal gas law equation 
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T - temperature - 325 K
substituting values in the equation 

136 789 Pa x V = 0.206 mol x 8.314 Jmol⁻¹K⁻¹ x 325 K 
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