A mixture of gases containing 0.20 mol of SO2 and 0.20 mol of O2 in a 4.0 L flask reacts to form SO3. If the temperature is 25ºC
1 answer:
Answer : The pressure in the flask after reaction complete is, 2.4 atm
Explanation :
To calculate the pressure in the flask after reaction is complete we are using ideal gas equation.
where,
P = final pressure in the flask = ?
R = gas constant = 0.0821 L.atm/mol.K
T = temperature =
V = volume = 4.0 L
= moles of
= 0.20 mol
= moles of
= 0.20 mol
Now put all the given values in the above expression, we get:
Thus, the pressure in the flask after reaction complete is, 2.4 atm
You might be interested in
The empirical formula of the compound : <u><em>RbO₂</em></u>
<h3>Further explanation</h3>Dulong and Petit's rule's rule, which says that the molar heat capacity, Cp, of a solid can be expressed as
Where N is the number of atoms per formula unit and R is the universal gas constant
While the value of R is:
R = 8.3144621 J / K · mol
then:
3R = 24.94 J / K · mol
Heat capactiy per gram of a compound containing rubidium and oxygen is 0.64 J · K⁻¹ · g⁻¹
We try the possible empirical formula from the composition of Rb and O
- Rb₂O
So the number of atoms: 3 (Rb = 2 atoms, O = 1 atom)
Then the value of the Cp:
Molar mass Rb₂O = 2.85.5 + 1.16 = 187 g/mol
Then this empirical formula Rb₂O is not appropriate
- RbO₂
So the number of atoms: 3 (Rb = 1 atom, O = 2 atoms)
Then the value of the Cp:
Molar mass RbO₂ = 1.85.5 + 2.16 = 117.5 g / mol
Then this empirical formula RbO₂ is appropriate
<h3>Learn more </h3>
chemical bond
ionic bonding
electron dots
Keywords: an empirical formula,compound, gas constant, Dulong and Petit's rule,the molar heat capacity
#LearnWithBrainly
Answer:
Explanation:
cM 0 0
So dissociation constant will be:
Given: c = 0.15 M
pH = 1.86
= ?
Putting in the values we get:
Also
As
Thus the vale of for the acid is