anonymous
  • anonymous
Which solution could you prepare by dilution? A. 400 milliliters of 2.50 molar solution from a 2.00 molar stock solution B. 600 milliliters of 3.00 molar solution from a 2.50 molar stock solution C. 700 milliliters of 4.50 molar solution from a 3.00 molar stock solution D. 900 milliliters of 3.50 molar solution from a 4.50 molar stock solution Please help me understand this question. :)
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Vocaloid
  • Vocaloid
hint: when we dilute, the molarity of the prepared solution is lower than the molarity of the stock solution
Vocaloid
  • Vocaloid
so, look at each answer choice to see which one has a higher stock solution molarity than the prepared molarity
anonymous
  • anonymous
Ok

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anonymous
  • anonymous
What's the difference between the molar solution and the molar stock solution? And how do you find the molarity?
anonymous
  • anonymous
That's where I get confused
Vocaloid
  • Vocaloid
molarity is given in the problem
Vocaloid
  • Vocaloid
ok, maybe I can explain it this way the "stock solution" is a solution with a known concentration, and the "prepared solution" is a new solution that we make by taking part of the stock solution and adding water
anonymous
  • anonymous
Ohh ok
Vocaloid
  • Vocaloid
so, let's take a look at the first answer choice: A. 400 milliliters of 2.50 molar solution from a 2.00 molar stock solution this means, we take a 2.00 molar stock solution, and we try to make a new solution that is 400 ml and 2.50 molar now, going by the rule I stated earlier, the stock solution molarity has to be higher than the new solution 2.00 molar stock is less than 2.50 molar solution so A cannot be our answer
Vocaloid
  • Vocaloid
keep going like this until you find the answer
anonymous
  • anonymous
Thank you so much for explaining :)

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