Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: summerhp on April 07, 2015, 12:41:20 PM
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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.
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Hi
It is redox chemistry ..check all the reactions taking place in every beaker.