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Butoxors [25]
3 years ago
10

Which one is a true statement about endothermic reactions?

Chemistry
1 answer:
kicyunya [14]3 years ago
6 0
In a endothermic reaction energy from an outside source is continuously being added.
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One hundred grams of water is saturated with NH CI at
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Answer:

  • About 18 g of NH₄Cl will precipitate.

Explanation:

The <em>table G</em> is the graph of the solubility curves for several solutes which is attached.

The second picture identifies the solubilities for the  NH₄Cl at 50ºC and 10ºC.

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The solubility of NH₄Cl at 10ºC is about 34 g / 100 g of water.

Then, at 50ºC 100 g of water saturated with NH₄Cl contains about 52 g of NH₄Cl and 100 g of water saturated with NH₄Cl contains 34 g of NH₄Cl.

The difference, 52g - 34 g of NH₄Cl shall precipitate:

          52 g - 34 g = 18g ← answer

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