Question

Calculate the molarity of 1.0 mol of KCl in 750 ml of solution

Answer 1

`M=1.3M`

Step-by-step explanation:

Hello,

In this case, the molarity, which is a unit of concentration of liquid dissolutions, is defined as shown below:

`M=(n_(solute))/(V_(solvent))`

Whereas the volume of the solvent must be in liters, therefore, the 750-mL solution is also equivalent to 0.750-L solution, hence, the molarity turns out:

`M=(1.0mol)/(0.750L)\\M=1.3M`

Whereas the molar units (M) account for mole over L (mol/L).

Best regards.

Answer 2

[KCl] = 1.33 M

Step-by-step explanation:

Molarity is mol /L

Mol of solute in 1 L of solution

Volume of solution is 750 mL

750 mL / 1000 = 0.750 L

1 mol / 0.750L = M → 1.33