k2cr207 is the answer make brain list
The molecular formula should be K2Cr2O7 .
Total positive charge = + 2
Total negative charge = - 2
Total positive charge = total negative charge
Equivalent weight = molecular weight /n
hope its helpfull
KMnO4 is a strong oxidising agent . In acidic medium, itself reduced to Mn2+ while in basic or neutral medium it reduced to MnO2, logic behind this is very simple , as acidic medium is also called as electron deficient medium . So there is no support from medium to reaction that why it compeleted its all deficiency of electron from other source (substrate) . While in basic medium (electron rich medium ) there is good support from the medium to reaction thatswhy it take only 3e from other source remaning electron provided by solution.
**In acidic medium**
MnO4- **+** **8**H+ **+ 5e = **Mn2+ **+ 4H2O**
from this reaction we can deduce that Mn7+ reduced to Mn2+ so **“ n factor” **for this reaction is 5
Eq.wt = molecular weight / n factor
So for KMnO4 molecular weight is 158.g
So Eq.wt = 158/5 = 31.6 g per equivalent
it will break down.
explanation:teli maa ☺☺