Question

In: Chemistry

how manu mL of 5.00 M NaOH solution are needed to prepare 750mL of a 0.150...

how manu mL of 5.00 M NaOH solution are needed to prepare 750mL of a 0.150 M NaOH solution? and how many mL of water misy be added to prepare the above solution?

Solutions

Expert Solution

We have to prepare diluted solution of NaOH ( 0.150 M ) from stock solution of NaOH ( 5.00 M ) . We can calculate volume of stock solution required to prepare dilute solution of NaOH by using dilution formula.

We have dilution formula, C stock V stock = C dilute V dilute

V stock = C dilute V dilute / C stock

V stock = 0.150 M 750 ml / 5.00 M

V stock = 22.5 ml

To get 0.150 M NaOH solution , dilute 22.5 ml of 5.00 M NaOH to 750 ml by using distilled water.

Volume of water required to prepare 0.150 M NaOH solution = 750 ml - 22.5 = 727.5 ml

ANSWER : 727.5 ml water is required to add to 22.5 ml of 5.00 M NaOH solution to get 750 ml of 0.150 M NaOH solution.


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