Question

What is the concentration of a 200.0 mL solution that contains 1.00 g of NaCl?

A. 0.00855 M
B. 0.0855 M
C. 0.855 M
D. 8.55 M

Answer 1

The concentration of the solution is 0.0855 M.

Step-by-step explanation:

The concentration of the solution can be calculated using the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

First, we need to convert the mass of NaCl to moles:

Moles of NaCl = mass of NaCl (g) / molar mass of NaCl (g/mol)

Using the given information, we have:

Mass of NaCl = 1.00 g

Molar mass of NaCl = 58.44 g/mol

Now we can calculate the moles of NaCl:

Moles of NaCl = 1.00 g / 58.44 g/mol = 0.0171 mol

Next, we convert the volume of the solution to liters:

Volume of solution = 200.0 mL * (1 L / 1000 mL) = 0.200 L

Finally, we can calculate the concentration:

Concentration (M) = 0.0171 mol / 0.200 L = 0.0855 M

Therefore, the concentration of the 200.0 mL solution that contains 1.00 g of NaCl is 0.0855 M.