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Alex73 [517]
2 years ago
10

Unknown # 41

Chemistry
1 answer:
sveta [45]2 years ago
4 0

Answer:

KI

Explanation:

From the question, we can see that a qualitative analysis of the compound shows that it has a lilac flame colour. The lilac flame colour corresponds to the potassium ion (K^+).

Again, the test of addition of HNO3(aq) and AgNO3(aq) to a solution is a test for halogens. If the result is a green precipitate, then the ion present is the iodide ion (I^-).

Hence, the compound must be KI.

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3 years ago
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You need to list the electronegativities of the five elements (there are tables with this information)

Element  electronegativity

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S:      2.58

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I / S: 2.66 -  2.58 = 0.08

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