Question

What is true of a solution of 2.0 M NaCl(aq)?

Answer 1

The unit of M (molarity) is a unit of moles per liter of solution. So, the solution contains 2.0 moles of NaCl per 1 liter of solution.

Answer 2

Answer : The correct option is, It contains 2.0 moles of NaCl per 1 liter of solution.

Explanation : Given,

Molarity of NaCl solution = 2.0 M

Molarity : It is defined as the number of moles of solute present in one liter of solution. The unit of molarity is, mole/L or M.

Formula used :

$\text{Molarity}=\frac{\text{Moles of }NaCl}{\text{Volume of solution in liters}}$

2.0 M means that 2 moles of NaCl present in one liter of solution.

Therefore, the correct option is, It contains 2.0 moles of NaCl per 1 liter of solution.