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nexus9112 [7]
3 years ago
5

Why is ice cold water rather than room temperature or warm water used to wash the remainder of the benzoic acid out of the beake

r?
Chemistry
1 answer:
sergiy2304 [10]3 years ago
7 0

Filtration, is a chemical process where you are separating a precipitate from a solution.

As a general rule:

"Solubility of compounds decrease with the increasing of temperature" as you can see in the graph

Now, if you want to recover benzoic acid from an aqueous solution, the better option would be with Ice cold water because its solubility will be lower producing more precipitate.

Learn more about this process in:

brainly.com/question/14918321

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Explanation:

Just divide 3000 by 5.

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Barium nitrate and sodium sulfate solutions can be used to precipitate barium sulfate. How many grams
-Dominant- [34]

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40.8g of sodium sulfate must be added

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That means, for a complete reaction of an amount of barium nitrate you must add the same amount in moles of sodium sulfate. To solve this problem we need to convert the mass of barium nitrate to moles = Moles of sodium sulfate that must be added:

<em>Moles Ba(NO₃)₂ -Molar mass: 261.3g/mol-:</em>

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<em>Mass Na₂SO₄ -Molar mass: 142.04g/mol-:</em>

0.287 moles * (142.04g / mol) =

<h3>40.8g of sodium sulfate must be added</h3>
7 0
3 years ago
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