contestada

An aqueous magnesium chloride solution is made by dissolving 6.92 6.92 moles of MgCl 2 MgCl2 in sufficient water so that the final volume of the solution is 2.00 L 2.00 L . Calculate the molarity of the MgCl 2 MgCl2 solution.

Relax

Respuesta :

anfabba15

Answer:

[MgClâ‚‚] = 0.036 M

Explanation:

Molarity are the moles of solute in 1L of solution.

For this case, our solution's volume is 2L

First of all, we convert the mass of solute (MgClâ‚‚) to moles

6.92 g . 1mol / 95.2 g = 0.0727 moles

Now, we make a rule of three:

In 2L of solution we have 0.0727 moles of solute

Then, in 1L of solution we may have, 1L . 0.0727 mol / 2L = 0.036 M

Otras preguntas