Question

A student needs to prepare 2.0 liters 0.60 M NaOH solution from a 8.0 M NaOH stock solution. How many milliliters of stock solution should the student use?(1 point)

A.150 mL
B.225 ml
C.250 mL
D.275 mL

Answer 1

Answer:it’s A

Step-by-step explanation:

Answer 2

Answer: The volume of stock solution of NaOH that the student should use is 150 mL

Step-by-step explanation:

To calculate the volume of stock solution, we use the equation:

`M_1V_1=M_2V_2`

where,

`M_1\text{ and }V_1` are the molarity and volume of the stock NaOH solution

`M_2\text{ and }V_2` are the molarity and volume of diluted NaOH solution

We are given:

`M_1=8.0M\\V_1=?L\\M_2=0.60M\\V_2=2.0L`

Putting values in above equation, we get:

`8.0* V_1=0.60* 2.0\\\\V_1=(0.60* 2.0)/(8.0)=0.15L=150mL`

Conversion factor used: 1 L = 1000 mL

Hence, the volume of stock solution of NaOH that the student should use is 150 mL