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Topic: Virtual Lab help  (Read 1735 times)

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Offline summerhp

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Virtual Lab help
« on: April 07, 2015, 12:41:20 PM »
I'm almost done my chemistry class (final unit) and only now have run into a road block. 

I have a beaker of 0.01 M KMnO4.


Beaker 1: 100 mL of 10 M H2SO3 and 100 mL of 10 M NaHSO3. Label this beaker acidified.

Beaker 2: add 200 mL of 10 M NaHSO3 (use two of the flasks). Label this beaker control.

Beaker 3: add 100 mL of 10 M NaOH and 100 mL of 10 M NaHSO3. Label this beaker basified.

Now I added 100 mL of 0.01 M KMnO4 to each of the three beakers.

What are the chemical equations for the reactions that took place? Explain why there was solid precipitate in all of the beakers.

Beaker 1 appeared bright pink, beaker 2 was clear and beaker three was bright green.  They all had a small amount of precipitate. 

Please help.  Thanks.

Online Borek

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Re: Virtual Lab help
« Reply #1 on: April 07, 2015, 02:11:16 PM »
You have to show your attempts at solving the question to receive help. This is a forum policy.
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Offline Vidya

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Re: Virtual Lab help
« Reply #2 on: April 07, 2015, 08:02:12 PM »
Hi
It is redox chemistry ..check all the reactions taking place in every beaker.

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