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Musya8 [376]
3 years ago
14

a solution containing 80 g of KCL in 200 g of H2O at 50 degrees celcius is cooled to 20 degrees celcius. How many grams of KCL r

emain in solution at 20 degrees celcius? How many grams of solid KCL crystallized after cooling?​
Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
8 0

Answer:

12g KCl will be crystallized

Explanation:

To solve this problem you need to know solubility of KCl in water at 20°C is 34g per 100g of water.

That means the maximum concentration of KCl you can dissolve at 20°C in 200g of water is 34g×2 = 68g of KCl

As solution containing 80g of KCl, the extra KCl will be crystallized after cooling, that is:

80g of KCl - 68g of KCl = <em>12g KCl will be crystallized</em>

I hope it helps!

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What is the complete ionic equation for NaOHaq plus HCIaq equals H2OI plus NaCIaq?
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Answer:

Ionic equation:

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Explanation:

Chemical equation:

NaOH(aq) + HCl(aq)   →  H₂O(l) + NaCl (aq)

Balanced chemical equation:

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Ionic equation:

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Net ionic equation:

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3 0
2 years ago
A copper coin with a mass of 6.30 grams changes temperature in the sunshine from 20.0°C to 32.0°C. How much energy is transferre
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Answer:

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calculation

energy is calculate  MCΔT  formula  where,

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4 0
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