Question

What is the molarity of a solution that contains 0.75 mol Naci in 3.0 L of solution? Select one: O a. 4.0 M O b. 2.3 M O d. 3.8 M O d. 0.25 M Clear my choice​

Answer 1

`\boxed {\boxed {\sf D. \ 0.25 \ M}}`

Step-by-step explanation:

Molarity is a measure of concentration in moles per liter.

`molarity= (moles \ of \ solute)/( liters \ of \ solution)`

The solution contains 0.75 moles of sodium chloride and has a volume of 3.0 liters.

• moles of solute = 0.75 mol NaCl
• liters of solution = 3.0 L

Substitute these values into the formula.

`molarity= ( 0.75 \ mol \ NaCl)/(3.0 \ L)`

`molarity= 0.25 \ mol \ NaCl/L`

Molarity has the molar (M) as its unit. 1 molar is equal to 1 mole per liter.

`molarity= 0.25 \ M \`

The molarity of the solution is 0.25 Molar and Choice D is correct.