In the EXPLORE section of your lesson 4.08 on Potential energy there were several animations to watch that provided a graphic il
2 answers:
You might be interested in
The formula for mole fraction is:
-(1)
The solubility of oxygen gas = 1.0 mmol/L (given)
1.0 mmol/L means 1.0 mmol are present in 1 L.
Converting mmol to mol:
So, moles of oxygen = 0.001 mol
For moles of water:
1 L of water = 1000 mL of water
Since, the density of water is 1.0 g/mL.
So, the mass of water is 1000 g.
Molar mass of water = 18 g/mol.
Number of moles of water =
Substituting the values in formula (1):
Hence, the mole fraction is .
Answer : The percentage aniline protonated is, 0.0209 %
Explanation :
First we have to calculate the pOH.
Now we have to calculate the hydroxide ion concentration.
The equilibrium chemical reaction will be:
From the reaction we conclude that,
Concentration of ion = Concentration of
ion =
Now we have to calculate the percentage aniline protonated.
Thus, the percentage aniline protonated is, 0.0209 %