Chemical Analysis Question GCSE

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dreaming_spires
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#1
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#1
why is it difficult to identify potassium ions when sodium ions are present? (1mark)

thank you! x
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Pigster
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I'm guessing you're talking about flame tests.

In which case, have you actually done the flame test of these two ions/solutions?
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dreaming_spires
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(Original post by Pigster)
I'm guessing you're talking about flame tests.

In which case, have you actually done the flame test of these two ions/solutions?
yup
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Pigster
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(Original post by i_solemnly_swear)
yup
What observations did you make?
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username2998742
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(Original post by i_solemnly_swear)
why is it difficult to identify potassium ions when sodium ions are present? (1mark)

thank you! x
Because in flame testing, the Potassium ions make a lilac colored flame, but Sodium ions make a yellow colored flame. If both of the ions are present then the color will be masked/not shown properly/mix of both and it will be hard to identify it.


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Lucky me, I had just revised this about 3 hours ago and I was just looking to do some questions. Perfect timing xx :lol:
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dreaming_spires
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(Original post by Pigster)
What observations did you make?
I can't remember, the practical was last week and we don't have our practical sheets at the moment
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dreaming_spires
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#7
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(Original post by TheEyeOfBaradDur)
Because in flame testing, the Potassium ions make a lilac colored flame, but Sodium ions make a yellow colored flame. If both of the ions are present then the color will be masked/not shown properly/mix of both and it will be hard to identify it.


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Lucky me, I had just revised this about 3 hours ago and I was just looking to do some questions. Perfect timing xx :lol:

Thanks! And you're welcome xx
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