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8090 [49]
3 years ago
11

Why do group 1 cations form precipitates when mixed with hcl?

Chemistry
1 answer:
Xelga [282]3 years ago
8 0
Both of you are overlooking a pretty big component of the question...the Group I cation isn't being dissociated into water. We're testing the solubility of the cation when mixed with HCl. And this IS a legitimate question, seeing as our lab manual is the one asking. 

<span>By the way, the answer you're looking for is "Because Group I cations have insoluble chlorides". </span>

<span>"In order...to distinguish cation Group I, one adds HCl to a sample. If a Group I cation is present in the sample, a precipitate will form." </span>
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Divide by their molar mass

N = 93.28 /14 = 6.663

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n = 30.04/15

n = 2

Therefore, the formula of the compound is:

[NH]n => [NH]2 => N2H2

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