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Lemur [1.5K]
2 years ago
10

Which is the BEST definition for a chemical ? *

Chemistry
1 answer:
denpristay [2]2 years ago
4 0

Answer:

A - Matter with a specific and constant chemicals composition

Its the only answer that makes sense

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It is Dispersion

Explanation:

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The Lucas test has _______ results based on the type of alcohol present because the reaction involves a _________, which is ____
Olin [163]

Answer:

1) positive

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Explanation:

A common test for the presence of alcohols can be achieved using the Lucas reagent. Lucas reagent is a mixture of concentrated hydrochloric acid and zinc chloride.

The reaction of Lucas reagent reacts with alcohols leading to the formation of an alkyl chloride. Since the reaction proceeds via a carbocation mechanism, tertiary alcohols give an immediate reaction. Once a tertiary alcohol is mixed with Lucas reagent, the solution turns cloudy almost immediately indicating an instant positive reaction.

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3 years ago
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yaroslaw [1]

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8 0
2 years ago
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