What is the consecration of a solution that is made by diluting 50.0 mL of a 40.0 M NaCl solution to a final volume of 1000.0 mL

Question

3 years ago

12

?

1 answer:

ira [324] · Answer 1 · 2022-04-17T21:38:56+03:00

2M

Explanation:

Given that:

V1 = 50mL

M1 = 40M

V2 = 1000mL

unknown:

M2 = ?

Solution:

Concentration is the number of moles solute in a solution.

Since the number of moles in the solute remains the same;

Concentration = $\frac{number of moles}{volume}$

number of moles = concentration x volume

Number of moles before and after the dilution remains the same;

M1 x V1 = M2 x V2

M1 is initial concentration

V1 is initial volume

M2 is final concentration

V2 is final volume

40 x 50 = M2 x 1000

M2 = 2M

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