rogersdanny7347
07.04.2020 •
Chemistry
A 75.0 mL aliquot of a 1.60 M solution is diluted to a total volume of 258 mL. A 129 mL portion of that solution is diluted by adding 125 mL of water. What is the final concentration? Assume the volumes are additive.
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Ответ:
Thus the final concentration is 0.236 M
Explanation:
According to moalrity equation:
= Molarity of stock solution = 1.60 M
= volume of stock solution = 75.0 ml
= molaity of diluted solution = ?
= volume of diluted solution = 258 ml
For second dilution:
= Molarity of stock solution = 0.465 M
= volume of stock solution = 129 ml
= molaity of diluted solution = ?
= volume of diluted solution = (129+125) = 254 ml
Thus the final concentration is 0.236 M
Ответ:
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