contestada

what is the concentration of the NaCl solution that results when 0.15 0 L of 0.556-M solution is allowed to evaporate until the volume is reduced to 0.105 L?

Respuesta :

Answer: The concentration of evaporated solution is 0.794 M

Explanation:

To calculate the molarity of the diluted solution, we use the equation:

[tex]M_1V_1=M_2V_2[/tex]

where,

[tex]M_1\text{ and }V_1[/tex] are the molarity and volume of the evaporated solution

[tex]M_2\text{ and }V_2[/tex] are the molarity and volume of initial solution

We are given:

[tex]M_1=?M\\V_1=0.105L\\M_2=0.556M\\V_2=0.15L[/tex]

Putting values in above equation, we get:

[tex]M_1\times 0.105=0.556\times 0.15\\\\M_1=0.794M[/tex]

Hence, the concentration of evaporated solution is 0.794 M