A 0.7875 -g portion of manganese dioxide (MnO2, MW 86.94 g/mol) was added to an acidic solution in which 1.1402 - g of a chloride containing sample was dissolved. Evolution of chlorine gas took place as a consequence of the following reaction: MnO2 (s) + 2 CI¯ + 4H+ Mn2+ + Cl2 (g) + 2 H₂O After the reaction was complete, the excess MnO2 was collected by filtration, washed, and weighed and 0.1539 - g was recovered. Express the results of this analyssi in terms of percent aluminium chloride (AICI3, MW = 133.34 g/mol).

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Chapter18: Electrochemistry
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Problem 50E: The amount of manganese in steel is determined by changing it to permanganate ion. The steel is...
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A 0.7875 -g portion of manganese dioxide (MnO2, MW 86.94 g/mol) was added to an acidic solution in
which 1.1402 - g of a chloride containing sample was dissolved. Evolution of chlorine gas took place
as a consequence of the following reaction:
MnO₂ (s) + 2 CI˜ + 4H* --> Mn²+ + Cl₂ (g) + 2 H₂O
After the reaction was complete, the excess MnO2 was collected by filtration, washed, and weighed
and 0.1539 - g was recovered. Express the results of this analyssi in terms of percent aluminium
chloride (AICI3, MW = 133.34 g/mol).
Transcribed Image Text:A 0.7875 -g portion of manganese dioxide (MnO2, MW 86.94 g/mol) was added to an acidic solution in which 1.1402 - g of a chloride containing sample was dissolved. Evolution of chlorine gas took place as a consequence of the following reaction: MnO₂ (s) + 2 CI˜ + 4H* --> Mn²+ + Cl₂ (g) + 2 H₂O After the reaction was complete, the excess MnO2 was collected by filtration, washed, and weighed and 0.1539 - g was recovered. Express the results of this analyssi in terms of percent aluminium chloride (AICI3, MW = 133.34 g/mol).
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