What volume of concentrated acid should be used to prepare the following?

Question

Question:

What volume of concentrated acid should be used to prepare 250.0 mL of 6.00 M HC2H3O2 solution?

(Concentrated acetic acid is 17.5 M)

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Topic: Inorganic Chemistry - Dilutions

Answer 1

Moles needed = 6.00 x 0.250 L = 1.5

V of concentrated acid = 1.5 mol/ 17.5 = 0.0857 L = 85.7 mL

other way :

you can use the formula

M1V1 = M2V2

6.00 x 0.250 = 17.5 V2

V2 = 0.0857 L