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Answer:
Molarity = 12 M
Explanation:
Given data:
Molarity of solution = ?
Number of moles of NaCl = 3.0 mol
Volume of solution = 250 mL (250/1000 = 0.25 L)
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Molarity = 3.0 mol / 0.25 L
Molarity = 12 M
Answer:
[tex]\boxed {\boxed {\sf 12 \ M \ NaCl}}[/tex]
Explanation:
Molarity, which tells us the concentration of a solution, is found by dividing the moles of solute by the liters of solution.
[tex]M=\frac{moles \ of \ solute}{liters \ of \ solution}[/tex]
1. Define Values
There are 3.0 Moles of NaCl. This is the moles of solute.
There are 250 milliliters of solution, but we need the liters.
a. Convert mL to L
1 milliliter is equal to 0.001 liters. We can multiply the given number of milliliters (250) by 0.001.
250 mL * 0.001 L/mL= 0.25 L
[tex]moles \ of \ solute = 3.0 \ mol \ NaCl \\liters \ of \ solution= 0.25 \ L[/tex]
2. Calculate Molarity
Substitute the values into the formula.
[tex]M=\frac{3.0 \ mol \ NaCl}{0.25 \ L}[/tex]
Divide.
[tex]M= 12 \ mol \ NaCl/L[/tex]
3. Define Units
1 mole per liter is equal to 1 molar.
Our answer of 12 mol NaCl/ L is equal to 12 M NaCl
The molarity is 12 M NaCl