Question

Suppose that instead of a 1 M solution, you decided to make up a 0.5 M solution. How many moles of NaCl would there be in one liter?

Answer 1

1M (molar) solution -------1 mol NaCl/ 1 L,

so
0.5M solution --------0.5 mol NaCl/1 L.

Answer: 0.5 mol NaCl in 1 L of solution.

Answer 2

Answer : The number of moles of NaCl would be, 0.5 mole

Explanation : Given,

We are using molarity of solution is 0.5 M instead of 1 M.

Volume of solution = 1 L

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

`Molarity=\frac{\text{Moles of solute}}{\text{volume of solution in ml}}`

In this, solute is NaCl.

`0.5M=\frac{\text{Moles of solute}}{1L}`

`\text{Moles of solute}=0.5mole`

Therefore, the number of moles of NaCl would be, 0.5 mole