2. Lisa, a librarian at the Knights of Favonius, is also a great potion maker. She wants to create a potion containing potassium dichromate (K2Cr207). The only available solutions in her laboratory are 21.0 mL of 0.650 M solution and 27.0 mL of 0.350 M solution. a. What is the concentration of potassium dichromate (in M) when the two solutions are combined?/ D. Wriat is its concentration in % w/v? c. For this potion to have a stronger effect, Lisa wants it to have a concentration of 20.0 % w/v. Can she create it based on combining the available solutions alone? ( d. Lisa only settled to produce the lesser potent potion with 10.0 % w/v. How much water will she add (in mL) to achieve this concentration?
2. Lisa, a librarian at the Knights of Favonius, is also a great potion maker. She wants to create a potion containing potassium dichromate (K2Cr207). The only available solutions in her laboratory are 21.0 mL of 0.650 M solution and 27.0 mL of 0.350 M solution. a. What is the concentration of potassium dichromate (in M) when the two solutions are combined?/ D. Wriat is its concentration in % w/v? c. For this potion to have a stronger effect, Lisa wants it to have a concentration of 20.0 % w/v. Can she create it based on combining the available solutions alone? ( d. Lisa only settled to produce the lesser potent potion with 10.0 % w/v. How much water will she add (in mL) to achieve this concentration?
World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 11STP
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Transcribed Image Text:2. Lisa, a librarian at the Knights of Favonius, is also a great potion maker. She wants to create a potion
containing potassium dichromate (K2Cr207). The only available solutions in her laboratory are 21.0 mL of
0.650 M solution and 27.0 mL of 0.350 M solution.
a. What is the concentration of potassium dichromate (in M) when the two solutions are combined?/
D. Wrial is its concentration in % w/v?'
c. For this potion to have a stronger effect, Lisa wants it to have a concentration of 20.0 % w/v. Can she
create it based on combining the available solutions alone? (
d. Lisa only settled to produce the lesser potent potion with 10.0 % w/v. How much water will she add (in
mL) to achieve this concentration?
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