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Crazy boy [7]
3 years ago
10

Hii can someone help me this is for my important unit test!

Chemistry
1 answer:
Sever21 [200]3 years ago
8 0
A. It shows quantitative data that relates two variables
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If 20.0 g LIOH react with excess KCl, giving a 17.0
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The yield of lithium chloride is 1.92 grams.

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In this reaction, we can see that 1 mole of lithium hydroxide reacts with 1 mole of potassium chloride to produce 1 mole of lithium chloride and 1 mole of potassium hydroxide.

Molecular weight of lithium hydroxide is 24.

Molecular weight of lithium chloride is 42.5.

So 24 grams of lithium hydroxide produces 42.5 grams of lithium chloride.

So, 20 grams of lithium hydroxide produces 20 * 24 / 42.5  grams =11. 29 grams of lithium chloride.

But this is when the yield is 100%.

But yield is 17%.

So the yield is 1.92 grams of lithium chloride.

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