What volume of a 0.540 M NaOH solution contains 15.5 g of NaOH?
A)0)209 L
B)0)718 L
C)1)39 L
D)4)78 L

Question

Quizplus · Accepted Answer

To solve the problem, we need to first calculate the number of moles of NaOH present in 15.5 g of NaOH:
Number of moles = mass/molar mass
Molar mass of NaOH = 23 + 16 + 1 = 40 g/mol
Number of moles = 15.5 g/40 g/mol = 0.3875 mol
Now, we can use the formula for molarity to calculate the volume of the NaOH solution:
Molarity = moles of solute/volume of solution in liters
0.540 M = 0.3875 mol/V
V = 0.3875 mol/0.540 M = 0.718 L
Therefore, the volume of the NaOH solution containing 15.5 g of NaOH is 0.718 L, which corresponds to choice B.

What Volume of a 0