# chemistry

posted by Nouri

2mno4 - + 5h2o2 + 6h= 2mn 2+ + 5o2(gás) + 8h2o
You must determine the percentage of hydrogen peroxide (H2O2) in a solution by permangan titration. In an acid solution, the permanganations will oxidize hydrogen peroxide to oxygen gas .........

You must determine the percentage of hydrogen peroxide (H2O2) in a solution by permangant titration. In an acid solution, the permanganations will oxidize hydrogen peroxide to oxygen gas ......... In other contexts, hydrogen peroxide can be reduced ..........

1- Calculate how many milliliters hydrogen peroxide solution you must measure

up in the vibrator to get a standard solution of approx. 20 ml. opposite

this volume of hydrogen peroxide solution to an erlenmeyer flask using

a pipette as accurate as possible

2- add 3-5 mL 3 mL sulfuric acid.

3- titers with standard (0.0200 mol / L) potassium permanagant solution. see attempts

4- Explain the method. What does the reaction equations tell you about

substance proportions in the reactions? Calculate the percentage of

hydrogen peroxide in solution. The bulk density of the solution allows you to equal 1.00 g / mLr

about 0.3% H2O2 (newly purchased)

-3 mol / L H 2 SO 4

- 0.0200 mol / L KMno4, standard solution

-erlenmeyer bottle 240 mL

burette- measuring cylinder, small

stand with city holder

magnet magnet and magnet

wash bottle

-

goggles

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