Respuesta :

THe  volume(number of  milliliters)  required  to make  150ml   of  0.075M  Kno3  solution  depend  on 
C1VI=C2V2 whre c  is the  concentration  and  v  is  the  volume
C1=0.266
V1=?
C2=0.075
V2=150
Therefore ,
V1=0.266  x v1=0.075 x150
0.266v1=11.25
divide  both  side by 0.266
v1=42.29ml

Answer: The volume of [tex]KNO_3[/tex] required to make the unknown solution is 42.30 mL.

Explanation:

To calculate the volume required to make the given molar 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 initial solution respectively

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

We are given:

[tex]M_1=0.266M\\V_1=?mL\\M_2=0.075M\\V_2=150mL[/tex]

Putting values in above equation, we get:

[tex]0.266\times V_1=0.075\times 150\\\\V_1=42.3mL[/tex]

Hence, the volume of [tex]KNO_3[/tex] required to make the unknown solution is 42.30 mL.

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