Answer:
Option C. 0.34 moles
Explanation:
Data obtained from the question include:
Molarity = 0.15M
Volume = 2.25L
Mole =
Molarity = mole /Volume
Mole = Molarity x Volume
Mole = 0.15 x 2.25
Mole = 0.34mole
The number of mole of AlCl3 present in the solution is 0.34mole.
Hello!
A solution of a weak base and its conjugate acid act as a better buffer than does a solution of a weak base alone because <span>A solution of a weak base alone has no acid present to absorb added base.</span>
If an acid (In this case HCl) is added to a buffer or a weak base solution, the following reaction happens:
HCl + A⁻ → HA + Cl⁻
In this way, the addition of acid is neutralized by the base.
If a base is added (In this case NaOH), only a solution of a weak base and its conjugate acid can react in the following way:
NaOH + HA → NaA + H₂O
So, a solution of only a weak base can resist the addition of acids but not bases, so it isn't a good buffer.
Have a nice day!
The liquid is blue is an example of qualitative data. Qualitative data is data that can not be represented by numbers. The volume and density are both quantitative data.