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When H2O2 is introduced into acidified potassium permanganate solution, potassium permanganate fades. What is the ion equation?
6H+2KMnO4+5H2O2=2Mn2+2K++8H2O+5H2O.
The following formula is () for only one substance. A, C3H4Cl2B, C2H6O C, C3H8D, C2H4O2 The following formula represents only one substance:(). A, C3H4Cl2B, C2H6O C, C3H8D, C2H4O2
"Only one substance" means that there is no isomer or isomer;
A, C3H4Cl2 also has isomerism (1,1-dichloropropene,1,2-dichloropropene,1,3-dichloropropene,2,2-dichloropropene,2,3-dichloropropene,3,3-dichloropropene)
B, C2H6O isomer, C2H5OH (ethanol), CH3OCH3(methyl ether)
There is no isomer in C and C3H8, which only represents propane.
D, C2H4O2, CH3COOH (acetic acid), HCOOCH3(methyl formate)
So C.
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