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Molarity

Dilute 20.8...

Question

Dilute $20.8$ mL of $6.0 M H_{2} S O_{4}$ to a volume of $1$ L. The concentration of the resultant $H_{2} S O_{4}$ solution is $25 y \times 10^{- 3} M$ , then $y$ is ________.

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Solution

The following formula is used for the dilution.
$M_{1} V_{1} = M_{2} V_{2}$ .
By substituting the values in the above expression, we get
$6.00 \times 20.8 = M_{2} \times 1000$
The molarity of the diluted solution will be $0.125$ M = $125 \times 10^{- 3}$ M.
hence $y$ = $5$

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