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stiv31 [10]
1 year ago
5

If 381 mL of 9.96 M LiCl is diluted with water to make 750 mL of solution calculate the molarity of the new solution.

Chemistry
1 answer:
user100 [1]1 year ago
8 0

Answer:

5.06 M LiCl

Explanation:

To find the new molarity of the solution, you need to (1) find the amount of moles LiCl (via the molarity equation using the original molarity and volume) and then (2) calculate the new molarity (via the molarity equation using the new volume and old moles). The final answer should have 3 sig figs to match the given values.

Molarity (M) = moles / volume (L)

<u>Step (1)</u>

381 mL / 1,000 = 0.381 L

Molarity = moles / volume

9.96 M = moles / 0.381 L

(9.96 M) x (0.381 L) = moles

3.79 = moles

<u>Step (2)</u>

750 mL / 1,000 = 0.750 L

Molarity = moles / volume

Molarity = 3.79 moles / 0.750 L

Molarity = 5.06 M

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