the mole of NaOH = 2.5.10-5
Further Explanation
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
Mole itself is the number of particles contained in a substance amounting to 6.02.10²³
Mole can also be sought if the amount of substance mass and its molar mass is known
mol = mass / molar mass
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed{\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
So to find the number of moles can be expressed as
n = V x M
Known variables
25.0 mL of a 0.1000 M NaOH solution
Asked
number of moles
Answer
We convert the volume unit, ml into Liter
because 1 liter = 1000 ml then
25 ml = 25.10⁻³ = 2.5.10⁻⁴ liters
then the mole of NaOH =
mol = concentration. volume
mol = 0.1. 2,5.10⁻⁴
mol = 2.5.10⁻⁵
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Keywords: molarity, mole, volume, concentration, solution, NaOH
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