Question

For each of the following, the number of moles of solute is given, followed by the total volume of solution prepared. Calculate the molarity. a. 0.426 mol of \(\mathrm{NaOH} ; 0.500 \mathrm{L}\) b. 0.213 mol of \(\mathrm{NaOH} ; 0.250 \mathrm{L}\) c. 1.28 mol of \(\mathrm{NaOH} ; 1.50 \mathrm{L}\) d. 4.26 mol of \(\mathrm{NaOH} ; 5.00 \mathrm{L}\)

Short answer

a. M = 0.852 M b. M = 0.852 M c. M = 0.853 M d. M = 0.852 M

Step-by-step solution

Identify the given values

Here, the number of moles of solute (n) is 0.426 mol, and the volume of solution (V) is 0.500 L.

Calculate the molarity

Using the formula M = n / V, we have: M = \( \frac{0.426~mol}{0.500~L} \) M = 0.852 M b. 0.213 mol of \(\mathrm{NaOH}\); 0.250 \(\mathrm{L}\)

Identify the given values

Here, the number of moles of solute (n) is 0.213 mol, and the volume of solution (V) is 0.250 L.

Calculate the molarity

Using the formula M = n / V, we have: M = \( \frac{0.213~mol}{0.250~L} \) M = 0.852 M c. 1.28 mol of \(\mathrm{NaOH}\); 1.50 \(\mathrm{L}\)

Identify the given values

Here, the number of moles of solute (n) is 1.28 mol, and the volume of solution (V) is 1.50 L.

Calculate the molarity

Using the formula M = n / V, we have: M = \( \frac{1.28~mol}{1.50~L} \) M = 0.853 M d. 4.26 mol of \(\mathrm{NaOH}\); 5.0 \(\mathrm{L}\)

Identify the given values

Here, the number of moles of solute (n) is 4.26 mol, and the volume of solution (V) is 5.0 L.

Calculate the molarity

Using the formula M = n / V, we have: M = \( \frac{4.26~mol}{5.0~L} \) M = 0.852 M