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karennayeli
12.03.2020 •
Chemistry
Determine the concentration of the following dye standard made by a student who pipettes out 2.50 mL of a 0.250 M stock solution and transfers it into a volumetric flask and dilutes the dye to a final volume of 100.0 mL with DI water.
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Ответ:
Concentration of dye in diluted solution is 0.00625 M
Explanation:
The given problem can be solved by using laws of dilution
According to laws of dilution-![C_{1}V_{1}=C_{2}V_{2}](/tpl/images/0544/2213/5f3a0.png)
where
and
are initial and final concentration respectively
Here,
,
and ![V_{2}=100.0mL](/tpl/images/0544/2213/bf029.png)
So,![C_{2}=\frac{C_{1}V_{1}}{V_{2}}](/tpl/images/0544/2213/6fee2.png)
or,![C_{2}=\frac{(0.250M)\times (2.50mL)}{100.0mL}](/tpl/images/0544/2213/4963b.png)
or,![C_{2}=0.00625M](/tpl/images/0544/2213/cd18b.png)
So, concentration of dye in diluted solution is 0.00625 M
Ответ:
OD. it indicates the direction of the