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3 years ago

Balance the following equations for a redox reaction that takes place in basic solution.

1 answer:

6 0

MnO₂ + 4OH(-) -----> MnO₄(-) + 2H₂O + 3e ........../×2
ClO₃(-) + 3H₂O +6e -----> Cl(-) + 6OH(-)
---------
2MnO₂ + 8OH(-) + ClO₃(-) + 3H₂O +6e ----> 2MnO₄(-) + 4H₂O + 6e + Cl(-) + 6OH(-)
2MnO₂ + 2OH(-) + ClO₃(-) ----> 2MnO₄(-) + H₂O + Cl(-)
---------
2MnO₂ + NaClO₃ + 2NaOH ----> 2NaMnO₄ + NaCl + H₂O

•••••••••
N₂O + 6OH(-) -----> 2NO₂(-) + 4e + 3H₂O
ClO(-) + H₂O + 2e---> Cl(-) + 2OH(-) ......../×2
--------
N₂O + 6OH(-) + 2ClO(-) + 2H₂O + 4e --> 2NO₂(-) + 4e + 3H₂O + 2Cl(-) + 4OH(-)
N₂O + 2OH(-) + 2ClO(-) + ----> 2NO₂(-) + H₂O + 2Cl(-)
-------
N₂O + 2KClO + 2KOH ---> 2KCl + 2KNO₂ + H₂O

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<u>Explanation:</u>

Hess's law is defined as the law which states that the total amount of heat absorbed or released for a given chemical reaction will remain the same whether the process occurs in one step or several steps.

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