setarakan persamaan reaksi redoks berikut MnO4 + cl- --->( Mn2+) + cl 2
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setarakan persamaan reaksi redoks berikut
MnO4 + cl- --->( Mn2+) + cl 2
MnO4 + cl- --->( Mn2+) + cl 2
1 Jawaban
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1. Jawaban Ramsyahnovaldy
Identify what's oxidized and what's reduced. Then, break it down into 2 half reactions. In this example, Cl is oxidized and Mn is reduced.
MnO4- ----> Mn2+ (reduction)
Cl- --------> Cl2 (oxidation)
Balance each half reaction in number of atoms and charge. Add water to the side that needs oxygen and add H+ to the side that needs H, then balance charge by adding electrons.
MnO4- ----> Mn2+
MnO4- -----> Mn2+ + 4H2O (add water to the side that needs O)
8H+ + MnO4- -----> Mn2+ + 4H2O (add H+ to the side that needs H)
5e- + 8H+ + MnO4- -----> Mn2+ + 4H2O (add e- to balance charge)
Cl- ----> Cl2
2Cl- ----> Cl2 + 2e- (balance number of atoms and charge)
Multiply each ahlf reaction by a whole number to make electrons equal:
2(5e- + 8H+ + MnO4- -----> Mn2+ + 4H2O )
5(2Cl- ----> Cl2 + 2e-)
Add the half reactions together and cancel out like terms. You end up with:
16H+ + 2MnO4- + 10Cl- ---> 2Mn2+ + 5Cl2 + 8H2O
Semoga dapat membantu yaa!!!